gas and Mechanical and Electrical Equipment manage  瓦斯和机电管理

analogy between mechanical and electrical system  机电类比

combined mechanical and electrical strength  机电综合强度

electical and mechanical control system  机电设备监控系统

electrical and electronical equipment control  电器与电控装置

Electrical and Mechanical Control System  机电设备监控系统

Electrical and Mechanical Control System EMCS  机电设备监控系统

Electrical and Mechanical Design  机电设计

Electrical and Mechanical Equipment  机电设备

electrical and mechanical equipment maintenance an  机电设备维修与管理

electrical and mechanical experiments  机电实验

electrical and mechanical monitor control system  机电设备监控系统

electrical and mechanical parameters  电－力参数

Electrical and Mechanical Properties  机电性能

Electrical and Mechanical Services Department  机电工程署

Electrical and Mechanical Services Department Workshop Services Suspense Account  机电工程

Electrical and Mechanical Services Trading Fund  机电工程营运基金

Electrochemical and mechanical machining  机械电解加工

green mechanical and electrical products  绿色机电产品