Duty period, highlighting prevention, and strengthen all aspects of troubleshooting, truly, does not produce unsafe.

值班期间，突出预防为主，加强对各个环节的隐患排查，切实做到不安全不生产。

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Every crossing has the fixed duty period , charges centre for being able to change it's period and in depending on a road when being crowded;

各路口有固定的工作周期，并且在 道路拥挤时中控中心能改变其周期；

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According to the PRC custom regulations, the import duty on service parts should be waived within the warranty period if the equipment was legally imported to China.

根据中国海关的规定，如果设备是合法进口到中国的，在质量保证期内维修零部件应免除进口关税的征收。

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You know, you come on active duty for a certain period, but you also sign up for a contractual period if you're an enlisted Marine.

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So you do a certain period on active duty, perhaps two years.

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We've handed over the duty to them for that period.

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