valvedv.给 ... 装阀adj.有阀的
valven.瓣膜;真空管;阀门;电子管
valve cottar气阀制销
valve-seat阀座
valve motion阀动
valve defect瓣膜缺损
valve sleeve阀门衬筒
valve adjust阀门调节
valve circle阀圆
valve points阀点
valve throat阈喉
valve lapper气门研磨工具