helical rack

       
  • 螺旋齿条

helical rack的用法和样例:

例句

  1. The fuel rack requires little force to accomplish its motion.
    油泵齿条几乎毋须费力就能使之移动。
  2. The rack type pusher designed by Chongqing Steel is in good condition.
    所设计的齿条式推钢机使用状况良好。
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