The causes of indoor drainage pipeline blockage are analyzed from three aspects of design process, construction methods, post-use maintenance and effective prevention measures are proposed.

从设计过程、施工环节、后期使用维护等三方面分析室内排水管道堵塞的原因，并提出有效地防止措施。

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Along with improving the equipment, Chris began a program to train employees to use equipment better and do simple maintenance themselves.

随着设备的改进，克里斯开始了一项计划，培训员工如何更好地使用设备,可以自行进行简单的维护。

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Design output should provide necessary data for purchase, fabrication, test, assembly, use, maintenance and service. Documents should be established for design output, including.

设计输出应为采购、制造、检验、试验、装配、使用、维护和服务，提供必要的依据。设计输出应形成文件，文件包括。

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One of the main things that we use cell culture or maintenance of cells outside the body for is to make more copies of cells.

我们培养细胞,或者体外维持细胞的重要步骤,就是复制更多的细胞

耶鲁公开课 - 生物医学工程探索课程节选

Of which, prices for vehicles use and maintenance, up by 5.1 percent, fuels and parts for vehicles, up by 2.6 percent.

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Royal Dutch Shell, an oil company, will use Darwin as a maintenance base for a floating processing plant for LNG from the Prelude field off Western Australia.

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Many utilities lack the depth of data needed to implement more cost-effective asset-management systems like condition-based monitoring and maintenance methods, which utilities in Europe and Asia are adopting to enhance the efficient use of capital and reduce operations and maintenance costs.

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