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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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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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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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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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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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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