The frictional resistance factor increases with the increase of the flow velocity, decreases with the increase of temperature and its variation law with the pressure is complicated.
摩擦阻力系数随着流速增大而增大，随着温度的升高而减小，而其随着压力的变化特别复杂。
The frictional resistance factor increases with the increase of the flow velocity, decreases with the increase of temperature and its variation law with the pressure is complicated.
摩擦阻力系数随着流速增大而增大，随着温度的升高而减小，而其随着压力的变化特别复杂。
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