water r surface 水面
backwater r surface 回水面
singular r surface 奇异曲面
shear r surface 切变面
angular r surface 棱角表面
articular r surface 关节面
water r surface ascent 水面上升
nuclear r surface burst 地表核爆炸
transient r-surface wave 瞬态瑞雷波
·2,447,543篇论文数据,部分数据来源于NoteExpress
So if we want to talk about the volume of that, we just talk about the surface area, which is 4 pi r squared, and we multiply that by the thickness d r.
如果我们要讨论它的体积,我们要用的是表面面积,也就是4πr的平方,乘以厚度dr
麻省理工公开课 - 化学原理课程节选
"Imagine that the mirror's surface is made of many smaller mirrors turned to different angles, like a disco ball, " said R.
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