drop-proof type motor 防滴水式电动机 ; 防滴水式电念头
Flat-blade Type Drop-proof Cable Terminal 直式电缆中间插组
drop proof 防脱
drop-proof device 防下坠装置
drop-proof f type motor 防滴水式电动机
The combined screw has the advantages of the easy processing, the convenient use and the good drop-proof and loose-proof effects.
该组合螺丝具有易于加工、使用方便、防脱落松动效果好的特点。
The new and practical drop-proof device plays the function of ensuring safety of the scaffold in the course of lifting up and down.
实用新型的防下坠装置在架体升降过程中起到保证安全的作用。
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