valve
valve相关例句和用法
heart valves.心脏瓣膜
valve英英释义
阀，阀门；电子管英释nna part of a tube or pipe that opens and shuts like a door to control the flow of liquid, gas, air etc passing through it
heart valves.心脏瓣膜
阀，阀门；电子管英释nna part of a tube or pipe that opens and shuts like a door to control the flow of liquid, gas, air etc passing through it
