lock ram piston 闭锁动作筒活塞
ram piston pressure 上顶栓压力
piston ram extruder 活塞式挤出机
ram retraction piston 锤头返回活塞
ram-retraction piston 锤头返回活塞
The intelligent control for ram piston pressure was researched to solve the problems of slow response speed, big overshoot and bad robustness of general PID control.
针对上顶栓压力常规PID控制存在响应慢、超调量大、抗干扰能力不强的问题，进行上顶栓压力的智能控制研究。
The rotating ramjet is a new conceptive engine based on the ram-compressed technology without any blade or piston but only a ram-compressed rotor is used as its moving core component.
旋转冲压发动机是一种全新概念发动机，采用激波增压和驻涡燃烧技术，其显著的高效、低污染特性引起越来越多人关注。
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