negative ion

常见例句

双语例句

• What is the use of these same negative ion generators?
  这些所谓负离子发生器有什么用呢?。
• The new method in the determination of negative ion surface-active agent is introduced, comparing with methylene blue method, it have merits of simple operation step and little dosage.
  介绍了水中阴离子表面活性剂测定新方法，该法与亚甲蓝法比较，具有操作步骤简单，萃取剂用量少的优点。
• Let's purify air with a negative ion generator.
  我们用负离子发生器净化一下空气吧。

原声例句

• I have shown that by taking Avogadro's number of individual ion pairs and putting them all together in a line, the system's energy became more negative.
  我推导出了,从每一个离子对中抽出阿伏加德罗常数,再把它们放在一起在一列中，这个系统的能量就变得更负。
  麻省理工公开课 - 固态化学导论课程节选
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