题目内容

In approximate models, ( ) is widely used in model experiments about oil flow.

A. Froude model
B. Reynolds model
C. Euler model
D. Complete similitude model

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Commonly, the equipment used for measuring velocity and flow rate in engineering are and .

The kinematic viscosity of saturated steam is ______ at 200 ℃. And the dynamic viscosity of heavy oil is _(0.1pa·s)______ at 333.15 K.

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运动粘度的量纲为 ,动力粘度的量纲为。