safety door hook 安全门钩 ; 太平门钩 ; 安全钩 ; 考试
safety hook 安全钩 ; 安全吊钩 ; 安全
With hook safety chain 带钩安全链
cargo safety hook 安全吊货钩
eye hook with safety latch 带安全阀的耳钩
safety latch hook 自锁安全吊货钩
safety detaching hook 安全分离钩
safety chain hook 安全链钩
Riggers and signal persons also need standard training and testing to ensure safety under the hook.
装配工人和发信号的人也需要标准的培训和测试，以确保安全下钩。
Objective to explore the safety of iris hook in the vitrectomy operation of eyes with small pupil.
目的探讨虹膜拉钩在小瞳孔玻璃体手术中应用的安全性。
One end of the draw rod fixedly connected with the outer end of the telescopic rod is connected with a safety draw hook.
所述的伸缩杆的外端固定连接有牵杆，在该牵杆的端部连接有保险牵引钩。
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