圆形半径为。
R And let the circle have a radius r.
这个圆环的半径是。
R You go around a circle which has radius r.
你绕圈的半径为。
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 I can take a rod with a radius r, which is 0.5 centimeters.
假设一根棒子半径，等于0。5厘米。
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。
R Radius r, - and let us have this rope here — I'll give the rope a color.
半径为，把绳子弄在这里-，给绳子上个色。
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。
The radius r--I'll give your light back because it may be nicer for you... The radius is 15 meters.
半径r，我把灯打开,便于你们听课。,半径是15米。
R And the track has a radius R, and at this moment in time the angle equals theta, and here is the object.
轨道半径是，在这个时刻,角度等于θ,这是物体。
So this is our circular orbit X with radius r, and at location X, at 12:00, that is where I fire my rocket.
这是我们的圆形轨道,半径为r，在点，12点的位置,是我发射火箭的位置。
Since you know the velocity of the transmitter from this ratio since you know the period, R which is this, you now also find the radius R.
既然根据这个比例,知道了发射机的速度,既然你们知道了周期，就是这个，也就知道了半径。
It is not as much a coincidence as you think, of course. But if something is in orbit, this is the orbital speed at radius r, then always is its total energy is half the potential energy.
但并不是巧合，当然，但如果某物在轨道里，这是在半径r的速度，则总是它的总能量，是势能的一半。
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。
R This is the radius of the orbit in which the electron travels.
是距离，So，，this，distance，here，is，R。,这是轨道的半径,就是电子运动的地方。
Let this be the angle d theta so it moves in a short amount of time over an angle d theta dS and the arc here is dS, R and the radius is R.
这是角度dθ,它运动了一会儿,运动过角度dθ,弧度是，半径是。
R And we abbreviate that by calling it r, l by two quantum numbers, and an l as a function of little r, radius.
我们把它简称为，两个指定的量子数n和，它是半径小r的函数。
R So if C is the circle, R is the disk of radius A.
就是C所包围的区域。，Well，，R，is，the，region，enclosed，by，C。,如果C是一个圆，R就是半径为a的圆盘。
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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