基本解释弹簧夹子词组短语短语pinch -cock 弹簧夹;节流夹pinch cock clamp 弹簧夹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 专业释义经济学弹簧夹机械工程弹簧夹子