英语词汇trace amounts怎么读，是什么意思，单词翻译、读音、固定搭配用法和短语词组及例句-英汉双解词典

单词	trace amounts
释义	trace amounts 美/ tre?s ??ma?nts / 简明释义微量：指极小的数量或浓度，通常难以被察觉或测量。网络释义 1 ?微量 ... toys玩具 trace amounts微量，痕迹量 trace concentrations微量浓度 ... 2 ?痕迹量 ... toys 玩具 trace amounts 微量，痕迹量 trace concentrations 微量浓度 ... 3 ?玩具 ... 毒物学特性 toys 玩具 trace amounts 微量浓度 trace determaination ... 短语 1 trace amounts of pb 痕量铅 2 trace amounts of lead 痕量铅的 3 trace amounts of copper 痕量铜双语例句 1 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。 2 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。 3 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。
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