| 单词 | valve |
| 释义 | valve /vaelv; vaelv/ n 1 (sorts of) mechanical device for controlling the flow of air, liquid, gas or electrons in one direction only: (控制空气、液体、 瓦斯或电子使之单向流动的) 制阀; 活门; 活瓣; 汽门： the inlet/outlet ~s of a petrol or steam engine; 汽油发动机或蒸汽机的进气 (排气) 门; the ~ of a bicycle tyre. 脚踏车轮胎的气嘴。 → the-illus at bicycle. 参看 -bicycle 之插图。 2 structure in the heart or in a blood-vessel allowing the blood to flow in one direction only. (心脏或血管的) 瓣膜。 3 ('radio) ~, thermionic ~ used in a radio (US U - tube). 真空管。 → thermionic. 4 device in musical wind instruments, eg a cornet, for changing the pitch by changing the length of the column of air. (管乐器, 如短号，用以改变音调的) 栓塞。 valvular /'vael-vjula (r); 1 vaelvjalw/ adj of the ~s of the heart or blood-vessels: (心脏或血管的) 瓣膜的： valvular disease of the heart. 心脉瓣膜为。 |
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