safety hook

基本解释

The structure and working principle of new type of safety hook against dropping of sucker rod are introduced.
介绍了新型抽油杆防脱安全吊钩的结构和工作原理。
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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The bulb has four LEDs, a switch for high or low settings, and a safety hook for hanging. It's rainproof and impact-resistant, and rated from minus 4 to 131 degrees.
这种灯有四个LED灯泡，一个调节光亮的开关，一个防雨罩和一个避震，并且可在零下4度到131度的环境中使用。

With state money, the Centre for Court Innovation, in partnership with the Brooklyn district attorney and Victim Services, has set up the Red Hook Public Safety Corps.
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Jurors ultimately let Bell off the hook, after hearing that the helmet complied with federal safety regulations.
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It gets them off the hook, it provides Arena with a another legitimate argument for the safety of lorcaserin and the opportunity to further prove the lack of human risk.
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