Hardware and software configuration of drive system with position controller, DC drive unit and PLC for a retainer of semi-floating mandrel mill are analysed.

分析了由位置控制器、直流传动装置和PLC组成的半浮芯棒连轧机组限动链控制系统的硬件配置及软件组成。

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Splint fixation is an external fixation system, composed of retainer, splint, paper pad and traction. Pressure under retainer is the power source of splint fixation in treatment of fractures.

夹板固定是以固定带、夹板、纸压垫、牵引等装置所组成的局部外固定力学系统，固定带的约束力是夹板固定骨折的动力来源和外载荷。

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This invention discloses a manual fast filtering sewage treatment system. It comprises the retainer tank and the fast filtering tank.

本发明公开了一种人工快速渗滤污水处理系统，它由隔栅池、预沉池和快滤池组成。

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