Moving radius and moving boundary pressure are derived based on its star-tup pressure gradient. Productivity of vertical wells is derived on the above three parameters.

基于其启动压力梯度，推导出了宾汉流体的运动半径和运动边界压力求取公式在此基础上推导出了垂直井在稳态状态下的产能预测公式。

youdao

And, that radius rotates around the wheel as the wheel is moving forward.

这条半径随着车轮的向前移动在旋转着。

youdao

The robot has straight lining, different radius and zero radius circle moving modes, and it can realize the robot quickly accomplishes moving and positioning in the millimeter scales in a huge range.

该机器人具有直线运动、任意半径圆周运动两种运动方式，能实现大范围内的快速移动定位，定位精度可达毫米级。

youdao

So we know it's moving on a circle of radius r.

因此这个质点始终在做半径为 r 的圆周运动

耶鲁公开课 - 基础物理课程节选

We are advising, based on new information in a deteriorating and fast-moving situation at a nuclear reactor site in Japan, that American citizens within a 50-mile radius of that plant should evacuate beyond the 50-mile mark.

WHITEHOUSE: Press Briefing