negative ion

常见例句

雙語例句

• What is the use of these same negative ion generators?
  這些所謂負離子發生器有什麽用呢?。
• 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.
  介紹了水中隂離子表麪活性劑測定新方法，該法與亞甲藍法比較，具有操作步驟簡單，萃取劑用量少的優點。
• Let's purify air with a negative ion generator.
  我們用負離子發生器淨化一下空氣吧。

原聲例句

• 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.
  我推導出了,從每一個離子對中抽出阿伏加德羅常數,再把它們放在一起在一列中，這個系統的能量就變得更負。
  麻省理工公開課 - 固態化學導論課程節選
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