closed ball

英 美
  • 闭球
  • ball n.球；球状物；炮弹；舞会；愉快的经历；胆量；胡说；（复）睾丸v.使成球状；呈球状；性交
  • closed adj.关闭的；封闭的；停业的动词close的过去式和过去分词.

双语例句

    1. Ball is a sphere with a circular channel for gate parts, ball rotation with the stem of the valve action to achieve headstock.
      球阀是用带有圆形通道的球体作启闭件，球体随阀杆转动实现启闭动作的阀门。

相关词汇

closed on closed closed tube method closed thoracotomy closed pretopology closed-bomb test closed observation closed-end funds closed head injury closed back volume closed shop system closed personality
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