The high temperature falling ball viscometer made by authors has been described as well as some results of polypropylene measured with it.

通过高温落球粘度计测量聚丙烯的零切粘度的原理和方法，并报道了用这一方法对电工级聚丙烯原料的零切粘度的实际测量结果。

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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。

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And then the material performance was confirmed by a serious test such as low-temperature falling ball impact test and airbag deployment specification test.

并以低温落球试验、气囊展开特性试验对材料选择结果进行了验证，并对以后同类型的设计提供了参考。

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He is following a simple rule: Keep the angle of the falling ball constant in your vision and adjust your running speed accordingly.

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Players must not approach within five metres of an opponent receiving a falling raised ball until it has been received, controlled and is on the ground.

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As they pass through, they trace out an arc, just like a thrown ball falling due to gravity.

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