结合热量运输的观点，提出改善管内流动阻力、提高综合传热效率的方法。
With the consideration of the view - point of heat conveyance, the methods of reducing the floating resistance and increasing the efficiency of integrated heat transfer are presented.
本文介绍了胶带运输机的托辊旋转阻力的测定方法。
The method for measuring the rotation drag of the idlers for belt conveyor is described.
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