The device has simple transportation and operation methods and saves labor and time.

该装置运输和操作方法简便，省时省力。

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Work study is a basic and traditional industrial engineering technique. With work-measuring techniques and subjecting working system, it studies scientific work processes and operation methods.

工作研究是一项传统的和基础的工业工程技术，以作业系统为研究对象，结合运用作业测定技术，研究科学合理的作业流程和操作方法。

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This paper summarized a set of operation methods for pre filtering of acrylic fiber wastewater based on lab research and production practice, which is of guiding significance for production practice.

文章根据实验室研究和生产实践，总结出了一套腈纶废水预过滤的操作方法，对生产实践具有重要的指导意义。

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Australian sources suggest that their intelligence service had questioned him about trips that he made to Iran, Lebanon and Syria, and Mossad's operation methods relating to foreign passports.

BBC: Israel and the curious case of Prisoner X

Their stealth and clandestine methods of operation allow them to conduct multiple missions against targets that larger forces cannot approach undetected.

CNN: Commentary: Where heroes come from

The US president said that many doubts were expressed about the operation by those who knew about it, because of the greater perceived risks in comparison with other possible methods such as air strikes, but that he welcomed this openness.

BBC: Bin Laden raid: Barack Obama describes 'huge risks'