valves [vælvz]

例句:

• Well we need to put by £200 for the pump valves to be renewed.
  我们需要存下200英镑以备更换水泵阀。
  来自柯林斯例句
• The heart has valves to let blood flow in and out of it.
  心脏有瓣膜控制血液流进流出.
  来自《简明英汉词典》
• The engineering gang fell earnestly to work on jammed valves.
  轮机组都起劲地埋头修理堵塞的阀门.
  来自辞典例句
• The two types of engine valves are intake and exhaust.
  发动机气门的二种型式是:进气口和排气口.
  来自辞典例句
• Transistors have many advantages over the old - fashioned vacuumtube valves.
  与老式真空管相比,晶体管具有许多优点.
  来自辞典例句