The beam bends to a circular profile of radius r.
梁弯曲成半径为r的园形形状。
The cylinder has uniform density, mass M, and radius R.
此圆柱体密度均匀，质量为 M，半径R。
R Let this be radius r, and at this moment in time, the object is here.
这是半径，假设这时，物体在这里。
Thus, polygon draws a 50-sides polygon that approximates a circle with radius r.
polygon画一个50边的多边形，来近似做一个半径为r的圆。
R If you know the radius r, then, of course, the velocity of the astronauts follows immediately.
如果知道半径，两个宇航员的，速度也能马上算出来。
Therefore, the larger the dog's body radius (R) is, the stronger these forces are on the dog's skin.
因此，小狗身体的半径越大，它皮肤表面的离心力就越强。
So here comes the work that Walter Lewin has to do when we go from infinity to that point, which is capital R, radius, from this object.
所以，这就是,我要做的功,从无穷远处移到这点，也就是距离这个物体，距离为R处。
So here is the Earth, here is the sun, mass sun, and the orbital radius is capital r.
这是地球，这是太阳，轨道半径用r表示。
Then not only the problem of queer dot at the well bore is avoided, but also the radius of influence domain (R) of the depression cone is convenient to deduce.
利用基于流量的相似方法分析了井流场中的渗透情况，此方法以流量作为未知函数，不仅避开了井口奇点问题，而且还可根据实际情况方便地推导出降落漏斗的影响区域半径（影响半径R）。
In this paper, a method-ARC method is introduced, by which the development chart can be drawn, of multiple-piece, equal-diameter and right-angled elbows with the radius as the arc of r.
本文介绍了一种用半径为r的圆弧绘制多节等径直角弯头展开曲线的方法——圆弧法。
In this paper, a method-ARC method is introduced, by which the development chart can be drawn, of multiple-piece, equal-diameter and right-angled elbows with the radius as the arc of r.
本文介绍了一种用半径为r的圆弧绘制多节等径直角弯头展开曲线的方法——圆弧法。
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