单动 meaning in Chinese

single action

Technical specifications of four - jaw independent chucks
四爪单动卡盘技术条件
Building hardware ; spring hinges for doors , single action
建筑五金.单动门用弹簧门枢
Power presses - general purpose single action straight side type
通用单动直边式动力压力机
Testing of accuracy of four - jaw independent chucks
四爪单动卡盘精度
Power presses : general purpose , single - action , straight side type
强压机:通用单动直边型压力机

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