For guided lifting and lowering of the workpiece.
为引导解除工件的降低。
The lifting and lowering device can adopt the hydraulic pressure mode as well as the mechanical mode.
升降装置可采用液压方式，也可以是机械方式。
This is probably caused by the attacker lifting and lowering the pin stack, trying to find the shear-line.
这可能是开锁者试图将高位珠子调整至切线而造成的。
The utility model discloses a suspension lamp lifting and lowering mechanism, which pertains to the mechanical technique field.
本实用新型公开了一种吊灯升降装置，属于机械技术领域。
The article introduces the application of S7-300 PLC in the automation of electric furnace and the principle of lifting and lowering control.
介绍s7- 300可编程序控制器在电炉控制系统中的应用及电极升降控制的原理。
It is recommended to breathe in when lifting and out when lowering the weight.
建议举起的时候吸气，放下的时候呼气。
The positioning apparatus also includes a lifting device for raising and lowering the outer cylinder. The lifting device includes a threaded drive mechanism coupled to the piston.
所述定位装置还包括用于升高和降低所述外气缸的提升装置，所述提升装置包括与所述活塞相连的带螺纹驱动机构。
All-metal motor and drive system, emergency lowering, high capacity batteries, and a 1.5 "wide fray-resistant lifting strap."
全金属电机和驱动系统，紧急下降，高容量电池，和一个1.5“宽磨损耐起重带。”
Several problems exist in the commonly used hydraulic balancing circuits, such as drift in re-lifting of suspended load and shock and Vibration in lowering.
工程机械常用的液压平衡回路，存在着悬垂负荷再提升下滑和下降冲击、振动的问题。
Method Large diameter oil tube and weighting rod are adopted to decrease lifting resistance of crude oil and to increase lowering-in energy of the string.
方法采用增大油管直径和下加重杆技术，来减少油流上升阻力和增大杆柱下行动力。
Method Large diameter oil tube and weighting rod are adopted to decrease lifting resistance of crude oil and to increase lowering-in energy of the string.
方法采用增大油管直径和下加重杆技术，来减少油流上升阻力和增大杆柱下行动力。
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