短语词组短語Plunger r stroke 柱塞行程plunger stroke 12 mm 活塞行程12毫米number of plunger stroke [機]柱塞行程數plunger stroke loss 柱塞沖程available plunger stroke length 柱塞有傚沖程net plunger stroke 柱塞實際沖程loss of plunger stroke 沖程損失 返回 plunger stroke