optimal rotation rate是什么意思

用法例句

In order to increase thermal efficiency of rotary dryer, optimal rotation rate o f machine tube and structural angle of L type's lifting board were studied on th e cold model of rotary dryer in laboratory.

为了提高回转烘干机的热效率,研究了回转烘干机的最佳转速和L型扬料板的结构角。

Study of optimum rotation speed of damp mill;

润磨机最佳工作转速率的研究