基本解释彈簧夾子词组短语短語pinch -cock 彈簧夾;節流夾pinch cock clamp 彈簧夾pinch cock更多词组英英字典柯林斯英英字典 a clamp used to compress a flexible tube to control the flow of fluid through it pinch cock剑桥字典pinch cock柯林斯字典专业释义經濟學彈簧夾機械工程彈簧夾子