extractor-weigher

例句：

1. 3. extractor, weigher例句：1. The engineer used an extractor to remove the screws from the machine.
   工程师使用一个提取器来从机器中取出螺丝。
2. 2. The weigher was used to measure the weight of the materials being processed.
   称量器被用来测量正在处理的材料的重量。
3. 3.The engineer had to use a special extractor to remove the heavy parts from the machine.
   工程师不得不使用特殊的提取器来从机器中取出重的部分。