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柯林斯高阶英汉双解学习词典释义
  • N-COUNT
    阀;活门
    A valve is a device attached to a pipe or a tube which controls the flow of air or liquid through the pipe or tube.
  • N-COUNT
    (心脏的)瓣,瓣膜
    A valve is a small piece of tissue in your heart or in a vein which controls the flow of blood and keeps it flowing in one direction only.
    例句
    He also has problems with a heart valve. 他的一个心瓣也有毛病。
英汉词典释义
英英词典释义
  • Noun
    1. a structure in a hollow organ (like the heart) with a flap to insure one-way flow of fluid through it
    2. device in a brass wind instrument for varying the length of the air column to alter the pitch of a tone
    3. control consisting of a mechanical device for controlling the flow of a fluid
行业词典
  • 人体组织学: 瓣[膜];
    体育: 阀门;
    动物学: 瓣;
    医学: 瓣,瓣膜;阈,活门。另见valva及valvula;
    水利: 阀门;安装在压力管道中用来控制水流的设备。;
    电力: 阀;
    解剖学: 瓣,又称:瓣(Valva(拉));
    铁道: 气门;