维修电工的 Family Electronics

有静电的施工现场 construction site with electrostatic field

周期性工作的电磁阀 cycling solenoid valve

电信领域的工程师 Telecommunications Field Engineer

电工学的 electrotechnical ; ectrtechnical

电动机的工作原理 Principles of Motor Operation

华电子工业集团的 DAHW

做电工电子的 ELECTRICAL APPLIANCE

弱电工程的设计、施工 Weak electricity construction design, construction ; Weak electricity engineering design and construction ; Weak current engineering design/construction ; Weak project design, construction