pipeline maintenance and repair
pipeline maintenance and repair
管道维护与维修
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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QC Group "Tuanjie", the Center of Study and Development, the Branch of Repair and Maintenance, China Petroleum Pipeline Bureau.
中国石油管道局维抢修分公司研发中心团结QC小组。
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A new method of pipeline repair and maintenance is introduced.
介绍一种管道维修新工艺。
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