valveman阀门操作者
valven.瓣膜;真空管;阀门;电子管
Valve components活门组件
valve of Houston直肠横襞, 直肠横褶, 休斯顿瓣
valve of Tulpius回盲瓣, 诺尔皮厄斯瓣
valveless engine无气门式发动机,无气门发动机
valve scavenging气门换气
valve spring key气门弹簧键
valve reparation瓣膜修复
valve yoke guide平阀框前杆
valve spring cap气门弹簧托盘,阀簧座圈
valve base patch气门座垫