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单词 有阀门
释义 〔bellows〕An apparatus for producing a strong current of air, as for sounding a pipe organ or increasing the draft to a fire, consisting of a flexible, valved air chamber that is contracted and expanded by pumping to force the air through a nozzle.风箱:能产生强气流的一种装置,如用于探检管状器官或给火增加风量,由一个活动的带有阀门的空气室组成,可通过一喷嘴向空气室打气使之压缩或膨胀
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