parts per trillion翻译

parts per trillion的基本解释

读音: 美: 英:

兆分之

例句

We have an ability to smell incredibly small concentrations, down to as little as two parts per trillion.人类可以闻到微小浓度的物质，哪怕浓度小到一万亿分之二。
The bees can detect the target chemicals in the air in concentrations as low as a few parts per trillion.而且蜜蜂能觉察到空气中浓度仅万亿分之一单位的特定化学物质。
Still widely used, this electronic nose is able to sniff out a few parts per trillion of chemicals found in the soil, water or air.这种仪器直至今天仍然广泛使用，它可以从土壤、水或空气中发现的数以万计的化学物中嗅到一部分（需要的）的东西。

短语

parts per trillion molar 单位为兆分之一
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