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1·During his duty time, for certain reason if he wants to take a short leave, he must be approved by the duty engineer and concerned supervisor.

在值班时间内因故离开岗位时要得到值班工程师和有关主管的批准。

2·Describing the specialities of the starting motor brushes are of short-time duty system, big current density and the contact voltage drop must be as small as possible.

汽车启动机电刷具有短时工作制、电流密度大及接触压降小的特点。