noun🔗Share阀门，活门。 A device that controls the flow of a gas or fluid through a pipe."The water valve needs to be turned off to prevent a leak. "为了防止漏水，需要关掉那个水阀。technicaldevicemachineindustrypartsystemChat with AIVocabulary GamePractice Reading
noun🔗Share气门，阀门 A device that admits fuel and air into the cylinder of an internal combustion engine, or one that allows combustion gases to exit."The mechanic replaced the faulty valve in the car engine. "修理工更换了汽车发动机里那个有故障的气门。devicemachineparttechnicalvehicleenergyfuelindustryChat with AIVocabulary GamePractice Reading
noun🔗Share阀门，活门 One or more membranous partitions, flaps, or folds, which permit the passage of the contents of a vessel or cavity in one direction, but stop or control the flow in the opposite direction"the ileocolic, mitral, and semilunar valves"回盲瓣、二尖瓣和半月瓣。partphysiologyorgananatomytechnicalmachinedevicefunctionsystembiologyscienceChat with AIVocabulary GamePractice Reading
noun🔗Share（门、窗等的）扇。 One of the leaves of a folding-door, or a window-sash."The old wooden window had several worn valves that needed replacing. "那扇老木窗有好几扇窗扇磨损严重，需要更换了。architecturepartChat with AIVocabulary GamePractice Reading
noun🔗Share电子管 A vacuum tube."My grandfather tinkers with old radios; he says they sound better because they use valves instead of transistors. "我爷爷喜欢摆弄老式收音机；他说老式收音机声音更好听，因为它们用的是电子管，而不是晶体管。electronicstechnologydevicemachineChat with AIVocabulary GamePractice Reading
noun🔗Share瓣，裂片 One of the pieces into which certain fruits naturally separate when they dehisce."After the pea pod dried in the sun, each valve separated, releasing the peas. "豌豆荚在太阳下晒干后，每片裂片都分开了，释放出豌豆。fruitplantpartChat with AIVocabulary GamePractice Reading
noun🔗Share瓣裂，瓣片。 A small portion of certain anthers, which opens like a trapdoor to allow the pollen to escape, such as in the barberry."The barberry anther has a tiny valve that pops open, releasing pollen when a bee lands on it. "小檗花药上有一种微小的瓣裂结构，当蜜蜂落在上面时，它会像小门一样打开，释放出花粉。biologyplantpartChat with AIVocabulary GamePractice Reading
noun🔗Share瓣，壳瓣 One of the pieces or divisions of bivalve or multivalve shells."The clam's shell has two valves that open and close. "这蛤蜊的壳由两个壳瓣组成，它们可以打开和闭合。animalbiologypartChat with AIVocabulary GamePractice Reading
noun🔗Share瓣，壳瓣 One of the two similar portions of the shell of a diatom."Under the microscope, the diatom's valve showed intricate patterns. "在显微镜下，硅藻的壳瓣呈现出精细的图案。biologyorganismpartplantscienceChat with AIVocabulary GamePractice Reading
verb🔗Share用阀门控制，调节 To control (flow) by means of a valve."The gardener valved the water to the rose bushes, controlling how much water they received. "园丁用阀门控制了流向玫瑰丛的水量，调节了它们获得的浇水量。technicalmachinesystemdeviceChat with AIVocabulary GamePractice Reading
