falling-ball viscosity method 落球粘度测定法
ball fall viscosity 落球粘度
ball test viscosity 落球式粘度测试
ball test of viscosity 落球式粘度测定
With regard to air viscosity, the law of time dependent displacement of elastic ball is studied in theory.
考虑到空气的粘性，理论计算了弹力球的运动位移随时间的变化规律。
The experiment, which USES the method of falling ball to measure viscosity coefficient of liquids, is one of the common physics experiments.
用落球法测定液体的粘滞系数实验是普通物理实验之一。
A simple and practical falling-ball viscometer, which can be applied into the automatic instrument with the need of viscosity control are introduced.
介绍了一种落球式粘度计，具有结构简单、实用的优点，可以应用于需要对粘度进行反馈控制的自动化装置。
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