美国flutter,美国Fluterscooter
flutter加载h5很卡
flutter加载h5很卡的解决方法如下：
10年积累的成都做网站、网站制作、成都外贸网站建设经验，可以快速应对客户对网站的新想法和需求。提供各种问题对应的解决方案。让选择我们的客户得到更好、更有力的网络服务。我虽然不认识你，你也不认识我。但先网站设计制作后付款的网站建设流程，更有榆次免费网站建设让你可以放心的选择与我们合作。
一种临时解决方案，在切换动画加载完毕后，再去构造 WebView，这样从用户角度上看，就不会有路由切换动画的卡顿了。class WebViewPage extends StatefulWidget {undefined
final String uri;
WebViewPage({undefined
@required this.uri,
}) : assert(uri != null);
@override
_WebViewPageState createState() = _WebViewPageState();
}
class _WebViewPageState extends State {undefined
WebViewController _controller;
bool _animationCompleted = false;
@override
Widget build(BuildContext context) {undefined
// 主要是下面的代码
var route = ModalRoute.of(context);
if (route != null !_animationCompleted) {undefined
void handler(status) {undefined
if (status == AnimationStatus.completed) {undefined
route.animation.removeStatusListener(handler);
setState(() {undefined
_animationCompleted = true;
});
}
}
route.animation.addStatusListener(handler);
}
return Scaffold(
title: widget.title,
backgroundColor: Colors.white,
body: _animationCompleted
? WebView(
initialUrl: 'about:blank',
onWebViewCreated: (WebViewController webViewController) {undefined
_controller = webViewController;
_loadHtmlFromAssets();
},
)
: Container(),
);
}
_loadHtmlFromAssets() async {undefined
var uri = Uri.dataFromString(
await rootBundle.loadString(widget.uri),
mimeType: 'text/html',
encoding: Encoding.getByName('utf-8'),
).toString();
_controller.loadUrl(uri);
}
}
Fluent是目前国际上比较流行的商用CFD软件包，在美国的市场占有率为60%，凡是和流体、热传递和化学反应等有关的工业均可使用。
它具有丰富的物理模型、先进的数值方法和强大的前后处理功能，在航空航天、汽车设计、石油天然气和涡轮机设计等方面都有着广泛的应用。
FLUENT软件包含基于压力的分离求解器、基于密度的隐式求解器、基于密度的显式求解器，多求解器技术使FLUENT软件可以用来模拟从不可压缩到高超音速范围内的各种复杂流场。
FLUENT软件包含非常丰富、经过工程确认的物理模型，由于采用了多种求解方法和多重网格加速收敛技术，因而FLUENT能达到最佳的收敛速度和求解精度。
灵活的非结构化网格和基于解的自适应网格技术及成熟的物理模型，可以模拟高超音速流场、传热与相变、化学反应与燃烧、多相流、旋转机械、动/变形网格、噪声、材料加工等复杂机理的流动问题。
关于美国俚语？
airhead: stupid person.
ace: excellent, great.
Adam and Eve - Rhyming Slang for 'believe'
aggro - short for aggravation or violence
amber fluid : beer
anorak - geek, nerd.
apples and pears - Rhyming Slang for 'stairs'.
armpit: dirty, unappealing place.
arse / ass [slightly offensive] (1): backside.
arse / ass (2): an unworthy person.
arse about/arsing about - to fool around
arse-about-face: something that is in a mess or crooked
arseholed: very drunk
arvo : afternoon
Aussie : Australian
awesome: great and impressive.
backhander (1): a payment given, normally in a secretive fashion.
backhander (2): hit someone.
ball (1): a fun time.
ball [slightly offensive] (2): a testicle.
ballistic - to go mad with rage
bang [slightly offensive](1): to make love
bang (2): a powerful effect.
banged up - to be put in prison.
bangers - another name for sausages.
barbie : barbecue, grill.
barf (1): vomit.
barmy - a foolish person, mad.
barney - row, violent argument.
beans: money.
beast [offensive] - an ugly woman.
beat: tired.
beemer: a BMW.
bent (1): a 'gay man'
bent (2): 'stolen'.
biggie: something important.
biker: a motorcycle rider.
bikkie : biscuit
bimbo - a young woman considered sexually attractive but of limited intelligence.
bird - woman/girl/girlfriend
bitch [offensive] (1): a very unpleasant woman.
bitch [offensive] (2): complain.
bitchy [slightly offensive]: moody.
bitzer : mongrel dog (bits of this and bits of that!).
bladdered - very drunk
blag - a robbery
bloke - man
blotto - 'very drunk'
blue (1) - XXX; dirty, hot, steamy, pornographic
blue (2): domestic fight or row.
bluey - pornographic film
boat race - Rhyming Slang for 'face'.
bod: body.
bonkers; go bonkers: crazy.
bonzer : great.
booboo: a mistake.
bovver - trouble, usually fighting.
booze: alcohol.
boozer (1): a pub
boozer (2): someone who likes alcohol.
Brahms and Liszt - Rhyming Slang for 'pissed' (drunk).
brass monkeys - cold weather
bread: money.
brew (1): tea or coffee.
brew (2): beer.
brill - short for 'brilliant'.
bull: bullshit; lie.
bullshit [offensive]: lie; dishonesty.
bugger - a mild form of abuse or an exclamation.
bunk-off - to be absent without permission
bunk-up - to make love.
bushed: extremely tired.
butt: the buttocks, bottom.
cabbage - someone who is a bit slow or stupid
cakehole - mouth..
catch some rays: get some sunshine.
char / cha - tea.
cheesy: cheap; lacking in good taste.
chicken: coward.
chook : a chicken
chuck up: vomit
chuck a sickie : take the day off sick from work when you're perfectly healthy.
ciggy - slang for cigarette.
cock and bull story - a rubbish story, nonsense.
(to) cop it - to die, to get into trouble.
cool: excellent; superb.
cooler, the: gaol; jail; prison
couch potato: a person who watches too much television.
cozzie : swimming costume
cranky : in a bad mood, angry.
crap [slightly offensive] (1): something worthless.
crap [offensive] (2): excrement.
crap [slightly offensive] (3): falsehoods and lies.
crikey - an expression of astonishment.
crust - money / wage.
cushy - easy.
dead cert - something that is definite.
deck: to hit someone.
dicey: unpredictable; risky.
dickhead [slightly offensive] - an idiot, fool.
dill : an idiot.
ding-dong - argument or fight.
dipstick - idiot, fool.
dirt: extremely bad person.
dirty: offensive; pornographic.
div/divvy - stupid or slow person.
doodle - something thats easy / no problem.
dodgy - dubious person or thing.
dog [offensive] - an ugly girl.
done over - beaten up
dope - a slow or stupid person.
doobry - a nonsensical word used when you forget the name of something
dorky: strange; peculiar.
dosh - money.
dosser - down-and-out, tramp.
down under : Australia and New Zealand.
Drongo : a dope, stupid person.
dude: a male.
dump [slightly offensive] - to defecate.
dyke [offensive] - lesbian.
dynamite: powerful; excellent.
dinosaur: something out of date or old fashioned.
earbashing : nagging, non-stop chatter.
evil: great; excellent.
eyeball: to stare long and hard at someone or something.
eyepopper: something or someone visibly astounding.
fab: fabulous.
face-off: confrontation.
fag [offensive] (1): homosexual
fag (2): cigarette
family jewels - Rhyming Slang for testicles.
far out - splendid.
fart [offensive] (1): an escape of gas from the bowels.
fart [slightly offensive] (2): an unpleasant person
fat head - an idiot or dull person.
fender-bender: small accident.
filth [offensive] - the police.
fit - sexually attractive.
five finger discount - shoplifting.
flaky: unpredictable.
flashback: sudden memory.
flick (1): film; movie.
flick (2): to give something or somebody the flick is to get rid of it or him/her
floating : intoxicated
floozie - a mistress or girlfriend.
flommox - confuse
flutter - a bet (on horse racing or football)
footie - Abbreviated form for football.
for crying out loud ! - a expression of frustration or anger.
forty winks - a short sleep or nap.
fox: attractive, alluring person.
freebie: something that does not cost money.
French kiss : kissing with the tongue.
full monty - 'the whole lot', everything.
full-on - powerful, with maximum effort.
funny farm - mental hospital or institution.
funny money - counterfeit money.
gaff - house or flat.
gander - to look at.
geek: an unattractive person who works too hard.
get it: to understand something.
glitch: flaw.
gobshite [offensive] - someone who talks rubbish all the time.
go bananas: go slightly mad.
good onya : good for you, well done
goof (1): make a mistake.
goof (2): a silly and foolish person.
goof off: waste time.
goof up: make a mistake.
goofy: silly.
Gordon Bennet - an exclamation.
grand: one thousand dollars.
grass: marijuana.
greaser - slang name for a 1950's style man.
grog : alcohol, beer.
grub: food.
grubby: not clean.
grungy: unclean and stinky.
gut: a person's stomach; belly.
guts: courage.
gyno - gynaecologist
hacked off - fed up, annoyed.
hairy: difficult; dangerous.
ham-fisted - clumsy.
hammered - drunk.
handcuffs: an engagement ring or wedding ring
hang a left: make a left turn.
hang a right: make a right turn.
headcase - mad
hep: sensible; informed.
her ('er) indoors - wife, girlfriend.
hickey: a love bite on the skin.
hip: sensible; informed.
hole in the wall - a cashpoint machine or bankomat.
hoo-ha - trouble; commotion.
hooker: prostitute.
horny: in the mood for sex, sexually stimulated;.
hot (1): sexy.
hot (2):popular.
hottie : hot water bottle
huff - bad mood.
humungous: really big.
hump (1) - to have sex.
hump (2) - bad mood.
hyper: overly excited.
icky: unpleasant.
I.D.: identification.
iffy - dubious, doubtful.
I'm outta here: I'm leaving; I'm departing.
in: fashionable.
ivories: teeth.
jack around: waste time.
jam (1): trouble.
jam (2): improvise (musically).
jamming, to be : going well.
jammy - lucky.
jerk: stupid or annoying person.
jock: someone good at sports.
K : a thousand.
keep your hair on - "keep calm".
kick back: relax and enjoy.
kick the bucket: die.
kip - sleep.
knackered - exhausted.
knees up - party.
knock: condemn, criticise.
knockout: beautiful woman; handsome man.
knock back : refusal (noun), refuse (transitive verb)
kook: peculiar person.
kraut [slightly offensive] - German
laid back: relaxed; calm.
lairy - loud, brash.
lame: incompetent.
legless - very drunk.
limp wristed - a gay man.
lip: cheeky talk.
loaded - someone with a lot of money.
loo : toilet
loser: a bungling and worthless person.
lost the plot - crazy/mad.
love handles: excess fat around the waist.
luvverly jubberly - wonderful, great, all is well.
make waves: cause problems.
malarkey - nonsense.
mate - friend
max, to the : maximum.
mega: big.
megabucks: a large amount of money.
mellow: relaxed.
mickey-mouse: unimportant; time-wasting.
minger [offensive] - an unattractive person (usually female).
mongrel : despicable person
moonie [offensive!] - to show one's bottom (arse) to unsuspecting onlookers.
moose [offensive] - an ugly girl.
mozzie : mosquito
mug : a gullible person.
naff - something which is cheap and nasty.
naff off - a milder version off fu*k off.
nancy (nancy boy) - a homosexual.
nark - a police informer.
narked - to be annoyed.
neat: cool; great.
nick - to steal.
nipper - a small child.
no-hoper - somebody who'll never do well
nosh - food.
not cricket - not normal or correct.
not all there - someone who is stupid, not bright intellectually
not half! - cetainly, for sure.
not the full quid - someone who is stupid, not bright intellectually.
nuke (1): nuclear weapon.
nuke (2): destroy; delete.
nuke (3): cook something in the microwave oven.
nut (1): odd or crazy person.
nut (2): someone passionate about something.
nutter - crazy person.
nuts [slightly offensive]: testicles.
nutty - eccentric.
off your face - to be very drunk.
out of your tree - crazy, drunk or stoned.
pad: someone's home.
pants (1) - an exclamation of frustration.
pants (2) - bad or rubbish.
party: celebrate.
party animal: someone that loves parties.
paws: hands.
peanuts: very little money.
pee: to urinate.
pickled: drunk.
pig out: eat too much.
pigs ear: to make a mistake with something.
piss [slightly offensive] - to urinate.
pissed - drunk.
pissed (off): angry; upset.
piss-head - a habitual drinker or alcoholic.
piss-up - a big drinking session.
plank - an idiot.
plastered: drunk.
plonker - an idiot
pad: someone's home.
plonk (1) : cheap wine
plonk (2): sit down - as in "plonk your arse down there".
poop [offensive]: defecation; shit.
poop out: get tired and quit.
postie : postman
pot: marijuana.
prezzy : present, gift
pro - someone who's good at something; professional.
psycho: crazy person.
puke: vomit.
pumped (up): excited.
queer [slightly offensive] - a homosexual.
rabbit - talk.
racket (1): noise.
racket (2): an occupation.
racket (3): something that's dishonest or deceptive.
rat: a despicable person.
rat-arsed - drunk.
rear (end): buttocks.
(a) riot - something or someone very funny.
rip off (1): stealing.
rip off (2): fraud.
ripper : great, fantastic
rocking: great; excellent.
roll up - a hand rolled cigarette.
rosie lee - tea
rubbish: nonsense; not true.
ruck - a fight.
rug - wig, toupee.
rug rat: a child.
rum - odd, strange.
runs, the: diarrhoea.
scoff: to eat.
screw up: to make a mistake.
screw-up: a person who makes a mistake.
scum (offensive] - a despicable individual.
shades - sunglasses.
shag [slightly offensive] - to make love.
shagged-out - to feel tired.
shed-load - a huge amount.
shite - milder variation of the word shit.
shitfaced [slightly offensive] - very drunk.
shithead [slightly offensive]: a stupid, impolite person.
skint - to have no money
skosh - a little bit.
slapper [offensive] - a loose or easy woman.
smeghead - an idiot.
snog - to kiss
snookered: cheated, stuck.
solid (1): really good; cool.
solid (2): consecutive.
specs: eyeglasses.
split: to leave.
spunk [offensive] (1): semen
spunk (2): spirit.
spunk (3): an attractive man.
stoned: drunk from drugs or alcohol.
stunner - a very good looking woman.
street smart: knowledgeable about city life.
strewth : exclamation
(I'll be) stuffed : expression of surprise
suck: to be bad and unacceptable.
sunnies : sunglasses
swagman : tramp
sweet - excellent, cool.
ta - thanks.
tacky - something of poor taste or style.
tanked (up) - to get very drunk.
tea leaf - Rhyming Slang for thief.
telly - television.
thick as shit [offensive]- very stupid.
thick as two short planks [offensive] - very stupid.
thingo : Wadjamacallit, thingummy, whatsit, something you don't know the name of!
thou: thousand.
threads: clothing.
ticker (1): the heart.
ticker (2): a watch.
tiddly - slightly drunk.
toss-pot [slightly offensive] - idiot.
totally: really; completely.
to the max: maximum.
troll - an ugly girl.
(the) trots - diarrhoea.
trouble and strife - Rhyming Slang for 'wife'.
trout [offensive] - unattractive woman
turkey (1): failure; flop.
turkey (2): dumb person.
turn-off: something that repulses a person.
umpteen: many; countless.
up for it - to be willing to have a good time.
up the duff - to be pregnant.
Uncle Tom Cobley and all - a phrase meaning 'everyone'.
uptight: nervous; anxious.
veg out : relax in front of the TV (like a vegetable)
wad: a lot of money.
wanker - an idiot or an unpleasant person.
wasted: killed.
weed (1): marijuana.
weed (2): someone who is weak.
wheels: car; motorcycle.
whiz: someone who shows a special talent for something.
wicked - excellent, cool.
wimp: weak; feeble.
wimpy: weak.
wind up - to tease.
winks: sleep.
wuss : coward
x-rated - pornographic.
yabber : talk (a lot)
Yank: an American.
yob - a horrible or uncouth young man.
zeds - sleep.
zero - an unimportant person.
zilch - nothing
zip (1) -nothing.
zip (2) - energy; vigor.
zip it - shut up.
zit: pimple; acne.
苹果在为“人工智能”不停收购， 谁能再做一个谷歌与Facebook在人工智能方面的收购清单？
在通往人工智能的路上，Google一直在不停地买买买。而且Google在人工智能领域的收购其实从2006年就开始了。
DeepMind（2014年1月26日被Google收购）
Deepmind可以说是当下最火的人工智能初创公司，于2014年1月26日被Google收购。
虽然被谷歌收购，但是DeepMind一直是独立运营的，他们的目标是开发能够“独立思考”的软件。为了能够开发这种类型的人工智能软件，DeepMind在海量数据集合的帮助下使用机器学习等技术训练自己的人工智能去完成某些工作任务。
api.ai（2016年9月19日被Google收购）
api.ai的API可以透过语音辨识、意图辨识和上下文语境理解等技术，让电脑理解人类语言并转换为行动，协助开发者打造类似Siri的对话式智慧助理，可用于聊天机器人、App、智慧家电等。
api.ai已经证明他们可以协助开发者设计、开发和不断改进会话式界面。超过6万名开发者正使用API.ai的工具开发会话式体验。api.ai提供了业界领先的会话式用户界面平台，能够协助谷歌指导开发者持续开发优秀的自然语言界面。
Moodstocks（2016年7月6日被Google收购）
Moodstocks公司成立于2008年，作为一个小的创业公司，他们的规模并不大。
Moodstocks公司是以图像识别技术为主，并推出了智能手机的图像识别应用程序Moodstocks Notes。在加入谷歌在巴黎的研发团队之后，他们将继续研发自己的视觉图像识别工具。
Dark Blue Labs（2014年10月23日被Google收购）
Dark Blue Labs是一家深度学习公司，主要从事数据架构以及算法开发工作，被收购后并入DeepMind。
Jetpac（2014年8月17日被Google收购）
总部位于旧金山的Jetpac通过Instagram等社交图片分享工具制作城市导游服务。通过分析食品、装饰和人物图片，Jetpac的软件便可对城市的各种特点进行分析。
Jetpac被收购前有三款智能手机应用，包括一款城市导游助手、一款图片分析器和一款图片探测工具，被收购后并入Picasa中。
Emu（2014年8月6日被Google收购）
Emu是一个类似语音助手Siri但却是“通过文本消息服务的内置助手”。
它整合了类似Siri个人助理的功能，将会根据你的聊天记录，自动执行移动助理的任务。比如自动建立日程、设置时间提醒、甚至还能帮你预定餐馆。
Emu被Google收购后主要用于Google Hangouts以及Google Now中。
Flutter（2013年10月2日被Google收购）
Flutter2010年底由Navneet Dalal和Mehul Nariyawala创办，利用计算机视觉技术结合手势监测识别技术，使得用户可以用简单的手势来操控电脑和移动设备。
Flutter被Google收购后主要应用在Android以及Google X项目中。
Wavii（2013年4月23日被Google收购）
Wavii是一家成立于2009年3月的自然语言处理技术公司，总部位于西雅图。
Wavii主要做的是扫描网络、寻找新闻、然后进行总结，并附上文章来源的全文链接。
Wavii被Google收购后主要应用在Google Knowledge Graph（Google知识图谱）中。
DNNresearch（2013年3月12日被Google收购）
DNNresearch公司是由深度学习大神Geoffrey Hinton与他的两个研究生Alex Krizhevsky和Ilya Sutskever成立。由于谷歌在本次收购中没有获得任何实际的产品或服务，所以本次收购实际上属于人才性收购，收购的主体是为了这三人团队。
Viewdle（2012年10月1日被Google收购）
Viewdle是一家成立于2006年的乌克兰公司，被收购前主要做的是增强现实和面部识别。
Viewdle曾经推出的应用包括SocialCamera和Third Eye，Social Camera是其推出的首款应用，用户只需通过Faceprint教会你的相机识别好友，此后只要照片中出现了这些好友，SocialCamera就可以自动为他们打上标签。
Viewdle被Google收购后主要应用在Android中。
Clever Sense（2011年12月13日被Google收购）
Clever Sense是本地推荐应用Alfred的开发商。Alfred的独特之处在于它将人工智能和机器算法有机结合，为用户提供个性化的场所推荐，推荐的场所包括附近的餐馆、咖啡厅、酒吧和夜店。
Clever Sense被Google收购后主要应用在Android中。
PittPatt（2011年7月23日被Google收购）
PittPatt是一家由卡耐基梅隆大学孵化的专注于人脸识别和模式识别公司，其开发了一项能在照片、视频和其他媒介之中识别匹配人脸的技术，创造了一系列人脸检测、跟踪和识别的算法。
PittPatt的人脸检测和跟踪的软件开发工具包（SDK）能在照片中确定人脸的位置，在视频中跟踪人脸的移动情况。
PittPatt被Google收购后主要应用在Android中。
SayNow（2011年1月25日被Google收购）
SayNow是一家成立于2005年的语音识别公司，总部位于美国加州帕罗奥托(Palo Alto)市。
SayNow的平台可将语音通讯、一对一通话和集团通话整合到Facebook和Twitter等社交网站，以及Android和iPhone手机应用中。
SayNow被Google收购后主要应用在Google Voice中。
Phonetic Arts（2010年12月3日被Google收购）
Phonetic Arts公司是一家位于英国的语音合成技术厂商。被Google收购前Phonetic Arts公司的语音合成技术主要用在游戏中，但谷歌希望将该技术用于其电脑声音自动输出系统，以使机器合成的人声更像人类的声音以及更加流利。
Phonetic Arts被Google收购后主要应用在Google Voice和Google Translate中。
Metaweb（2010年7月16日被Google收购）
Metaweb是一家从事语义搜索（Semantic Search）技术开发的风险企业，目标是开发用于Web的语义数据存储的基础结构。
Metaweb被Google收购后主要应用在Google Search中。
Neven Vision（2006年8月15日被Google收购）
这个可以说是Google最早在人工智能领域的收购了，可以追溯到2006年。
Neven Vision是一家图像识别技术公司，其能自动从图片里提取信息、并且辨认图片的内容，被收购前主要应用于手机以及美国政府和执法部门的计量生物学应用中。
Neven Vision被Google收购后主要应用在Picasa以及Google Goggles中。
美国高校高水平游泳队常用蛙泳技术训练方法是什么？
国内高校游泳教练员在蛙泳技术训练上,要多运用分解技术练习,发散思维,设计更多不同的练习手段,让训练内容更丰富,调动运动员的积极性,使其更好地了解掌握技术动作,提高训练实效性。针对国外的各种水下辅助工具,可以在了解其特性的基础上,加以改进借鉴,得出属于我国自有研发的游泳辅助训练器材,进而推动国内高校游泳市场的需求,也为国内高校游泳队提供一定先进性、科学性的训练保障。
一，美国高校高水平游泳队常用蛙泳技术训练方法
(1)三次蛙泳腿一次蛙泳手(3kick-1 pull breast),低头,两臂夹紧并拢伸直,蹬壁出发,要求蹬三次蛙泳腿划一次蛙泳手的节奏完成动作,重点要求运动员上身保持流线型,两臂与髋部,不要上下晃动,保持稳定。训练中分解练习的蹬腿次数可以针对试用与不同的运动员,能力越高的队员可以加大蹬腿次数与划臂的配合,反之,相对减少。
(2)蛙泳划手蝶泳打腿(br w/dolphin kick),要求运动员按照一次蛙泳手,一次蝶泳腿的节奏进行练习,其目的是控制身体流线型,保持游进的稳定性。训练中也可增加难度,如把头抬起,一直保持在水面;蛙泳腿、蝶泳腿交替等训练手段,后者可加强纠正蛙泳收腿动作。值得注意的是,通过对主教练团队的访谈得知,国内蛙泳训练常见的一次蛙手两次蝶腿的技术动作,在国外比较少用,因从蛙泳技术动作的结构而言,如采用两次腿一次手的技术练习,会间接破坏身体游进的流线型,从而达不到此练习方法的效果。
(3)蛙泳划手自由泳打腿(br w/flutter kick),要求运动员按照一次蛙泳划手,六次自由泳打腿的节奏进行练习,其目的是为了控制运动员上身及手臂划动后保持身体在水中的流线型。其中要注意自由泳打腿的次数取决于划幅与划频,越快越好,持续不间断,如能完成每次划手动作配合6～8次的打腿,效果会更好。
二， 蛙泳技术动作的水下辅助工具训练方法
阻力袜是类似一个网袋状套在运动员双脚上,其分有大、中、小等型号,以此来增加双脚的动作阻力,此辅助工具适用于蛙泳腿部技术动作的练习,一般采用小号,在加大阻力的基础上,让运动员提高腿部的收蹬频率,快速的完成技术动作。对国内的各高校教练员访谈中得知,现下国内各高校游泳队在游泳辅助工具中,针对上肢练习的种类较多,像陆上有各种拉力器材,水中也有不同类型的划水掌运用在不同的技术练习中,但对腿部的水中辅助练习方法还比较缺乏,为此,笔者认为,这方面值得我们学习与借鉴。
文章题目：美国flutter,美国Fluterscooter
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