Installation of machinery and equipment的意思|示意
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机械设备的安装
Installation of machinery and equipment的网络常见释义
机械设备的安装工程 机械设备的安装工程；Installation of machinery and equipment; 心轴用于安装工具的蕊棒，如牙钻蕊棒A shaft on which a working tool is mounted, as in a dental drill