duty period

Throughout the long and difficult period of Watergate, I have felt it was my duty to persevere, to make every possible effort to complete the term of office to which you elected me.

经过漫长而艰难的水门事件，我感觉到，我不得不辞职，尽力尽快结束我的总统工作。

This year, his duty period is to be full, some new movies are to be made.

今年, 他的任期将满, 据说,一旦“无官一身轻”,新电影几开始拍摄.

With the same magnitude, random period error casts much larger effect on the conversion efficiency than random duty cycle error, which is similar with the case in bulk crystals.

随机周期长度偏差对准相位匹配波导中差频效率的影响要比随机占空比偏差的影响来得大，这与单块周期极化晶体中的情况类似。

Abstract In this paper, we expound the gist of the process control in thick-layer carburizing for heavy-duty gears which includes the selection of the suitable carburizing temperature, cycle and ratio of the carburizing to diffusing period, the way and the demand of carbon-potential control.

阐述了大型重载齿轮深层渗碳工艺控制的要点，包括渗碳温度和时间的合理选择，强渗与扩散时间的最佳分配，碳势控制的途径和要求。

The State Council Customs Tariff Commission shall determine and promulgate for implementation details of the types of goods subject to the special Customs duty, the duty rates and the time period when such levies commence and finish.

征收特别关税的货物品种、税率和起征、停征时间，由国务院关税税则委员会决定，并公布施行。