trace amounts翻译

trace amounts的基本解释

读音: 美: 英:

微量：指极小的数量或浓度，通常难以被察觉或测量。

例句

You don't have to worry, we're definitely talking about trace, trace amounts.但你不必担心，我们所说的绝对是非常，非常微量的。
In normal coal samples, quartz and other minerals are found only in trace amounts.在一般的煤的样板中，石英和其他矿物质的含量是相当低的。
They occur in such trace amounts in natural, or "whole," coal that they aren't a problem.它们在天然煤(或称“全”煤)中仅以痕量存在，并不构成问题。

短语

trace amounts of pb 痕量铅
trace amounts of lead 痕量铅的
trace amounts of copper 痕量铜
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