Compared with traditional methods, this way is with the following advantages: simple and reasonable construction procedures, convenient operation and reliable technique.

该方法与传统方法相比，具有施工工序简单合理，操作方便等特点，且技术可靠。

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Methods 31 Laparoscopic and 33 traditional operation cases were compared as to the safety, recovery after operation, effect of radical cure and follow-up results were compared.

方法比较同一手术组31例腹腔镜和33例传统手术结肠癌根治病例的手术安全性、术后恢复、肿瘤根治性和随访结果。

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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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