... 建设 building, construction 建筑安装工程 construction and installation work 建筑材料 building materials 建筑结构 building structure ...
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Construction Construction, installation, repair, decoration and other engineering work 3.
建筑业建筑、安装、修缮、装饰及其他工程作业3%。
Content of construction: civil work, steel structure work, installation work, commissioning, construction and purchase management.
工程内容：土建施工、钢结构、安装、检验、工程施工及采购管理。
Work principle, construction, maintenance, inspection and diagnosis method for failures of air condition installation for motor vehicle described.
介绍了汽车用空调装置的工作原理、结构以及维护、检查和故障诊断方法。
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