英语词汇trace impurities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 impurities
释义	trace impurities 简明释义微量杂质网络释义 1 ?微量杂质公告说：新闻报道中所说的钕和铬在被抽检SKII产品中只以微量杂质（ trace impurities ）的形式存在，以这些微量水平不会造成任何安全问题。 2 ?痕量杂质痕量杂质短语 1 ultra-trace impurities 痕量杂质元素 2 testing for trace impurities 残留物的测试 3 inspection of trace impurities 微量杂质测定双语例句 1 The efficiency of the separation of the matrix is more than 99.9%. The recovery of standard addition of 15 trace impurities is 87—106%. 方法对于基体的分离效率达99.9%以上，痕量杂质的标准加料回收率在87—106%之间。 2 It contained high levels of impurities and unsafe levels of trace elements. 它含有高浓度的杂质和不安全的各级微量元素。 3 NF3 is a colorless gas. Trace quantities of impurities can impart a musty or pungent odor to the gas. NF 3是无色气体。痕量的杂质会使气体带有一种霉味或刺激性气味。
随便看	standing operation instruction standing operation procedure standing order standing orders standing organization standing or plying for hire standing out stand out against stand out for standing ovation standing ovation stand over standing over of payment standing panel standing part stand part stand pat standing patrol standing permit standing pier standing pivotal transfer standing place standing place standing plan stand point

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