1、

all kinds of safety hook

各种保险钩

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2、

a new type of safety hook against dropping of sucker rod

新型抽油杆防脱安全吊钩

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3、

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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4、

in the open mold in place, the pneumatic safety insert hook under direction, can not be mode-locked.

在开模到位后,气动安全钩插入导向杆,无法锁模。

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5、

when the boat reach its right position , reset the release hook in the boat, insert the safety pin.

待到完全归位后,在艇内回复脱钩装置,插上安全销。

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6、

The writer verifies that the designed safety coefficient of wire line should be bigger than 3 while the hook has the speed of 0.4-0.55 m/ sec at hook load rating, corresponding to the drawworks operation at the third speed and air clutch operation at rated torque;

证实额定大钩钩载时,大钩速度为0.4~0.55米/秒,相当于绞车在Ⅲ档工作,气胎离合器在额定扭矩工作,此时钢丝绳设计安全系数大于3。

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7、

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.

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8、

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。

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