electromagnetic pump wave crest soldering machine

例句：

1. 1. The electromagnetic pump is used to remove impurities from the water.
   电磁泵用于从水中去除杂质。
2. 2. The wave crest of thewave is the highest point in the wave.
   波峰是波浪的最高点。
3. 3. The solderingmachine is used for connecting electronic components together.
   焊接机器用于连接电子元件。