双动式 (Double Action)犐钢羟安恍枰葘翩m后扳到底，可直接扣板机击发。优点是射速比较快，尤其在需要自卫紧急开火的情形，而且只要不按动枪机就无法...
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双动式汽轮机 double motion turbine
双动式轧棉机 double-action gin
单级双动式离心清水泵 acting centrifugal fresh water pump ; single-stage double-acting centrifugal fresh water pump
滑缸双动式引擎 sliding cylinder double acting engine
双动式空气压缩机 double-acting air compressor
双动式液压油缸 double acting hydraulic ram
双动式手摇泵 double acting hand force pump
双动式压缩机 Double acting compressor
双动式左轮的命中率 Double-action revolver shots hit
双动式气缸，无弹簧断裂之处。
双动滚笼式螺旋预处理机是通过对块状物体的离心滚动摩擦碰撞，清除其表面的非同质附着物。
The double moved cylinder pretreating-machine clears away the nonidentical substance adhering to the surface of lump-shaped objects via centrifugal rolling friction collision.
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