0 2π π —— 表面曳力 (Wall drag) 曳力与曳力系数(Drag and drag coefficient) 流体静压强对整个球体表面的作用力在流动方向上的分量为 Fn = ∫ dφ ∫ ( ?
基于1个网页-相关网页
It transforms your browser into a 3-d photo wall allowing you to zoom, click and drag photos easily in a slick format.
你的浏览器会变成3 - D图片墙,你可以轻松而流畅地放大、点击、拖拽相片。
Design custom wall collages and wall art with just a drag and a drop.
设计定制的墙拼贴画和只是一个拖和下降墙艺术。
In Johannesburg, the exact same shot would either fly over the crossbar or hit the wall, as the lower air density reduces both drag and the effect of spin.
在约翰内斯堡,完全相同的射击既可能比球门飞得高也可能撞到人墙,因为更低的空气密度既降低了拖曳力也降低了旋转效应。
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