您現在的位置: Language Tips> Easy English> Odd Question  
     





     
    船如何能浮在水上
    [ 2007-10-22 11:33 ]

     

    船為何能浮在水上?大家都知道是水的浮力的作用。那么浮力究竟是怎么作用的呢?我們看看下面的說法。

    A boat floats, because the fluid in which it is floating offsets the downward pull of gravity and pushes it up.

    The scientific name for this force, which allows even immense objects to float in liquid, is buoyant force, more commonly known as buoyancy.

    A solid object's density determines whether or not the buoyant force of a liquid can lift it.

    The density of an object depends upon its weight and its size. Given two solid objects that are different sizes, but weigh the same, the smaller, more compact object is the denser of the two.

    Fluids also have density. When an object is placed in the fluid, it pushes aside some of the liquid and, if its density is greater than that of the fluid it displaces, it will sink and, if not, it will float.

    Despite the enormous size of some ships, they are basically metal shells filled with air, and are less dense and lighter than the water they push aside, which allows the boats to float.

    Gravity 重力

    Buoyancy 浮力

    Density 密度

    我想了解更多趣味百科知識

     
     
    相關文章 Related Stories
     
     
     

    本頻道最新推薦

         
      為什么下雪時天氣暖
      You are the smartest fish I've ever seen!
      Dog burger
      為什么老了脾氣好
      飛蛾為什么撲火

    論壇熱貼

         
      開個題目大家扯:hotel & restaurant
      追求某人
      請教工商年檢如何翻譯
      How to translate “中國老字號”into English?
      "港股直通車"怎么翻譯?
      兩免一補怎么說?




    无码精品人妻一区二区三区人妻斩 | 亚洲av综合avav中文| 久久久久亚洲AV无码专区首JN| 狠狠躁天天躁无码中文字幕| 中文字幕欧美日韩在线不卡| 免费看又黄又无码的网站| 中文字幕日韩精品有码视频| 亚洲男人在线无码视频| 久久亚洲AV成人无码电影| 中文成人无码精品久久久不卡| 免费无码一区二区三区| 精品亚洲AV无码一区二区| 无码中文人妻视频2019| 国产强伦姧在线观看无码| 亚洲国产精品无码久久| 中文字幕国产91| 天堂а√在线中文在线最新版| 男人的天堂无码动漫AV| 亚洲AV无码国产丝袜在线观看| 人妻无码精品久久亚瑟影视 | 亚洲欧美日韩中文字幕一区二区| 国产a v无码专区亚洲av| 老司机亚洲精品影院无码| 亚洲AV无码不卡在线播放| 超清无码熟妇人妻AV在线电影| 中文字幕亚洲精品| 无码中文人妻在线一区二区三区 | 久久无码中文字幕东京热| 少妇无码一区二区三区免费| 日韩欧美成人免费中文字幕| 色欲综合久久中文字幕网| 熟妇人妻久久中文字幕| 亚洲中久无码不卡永久在线观看| 88久久精品无码一区二区毛片 | 极品粉嫩嫩模大尺度无码视频| 中文字幕在线免费看线人| 国产亚洲美日韩AV中文字幕无码成人 | 少女视频在线观看完整版中文| 久久久无码精品午夜| 亚洲人成无码网WWW| 中文字幕免费不卡二区|