trace elements的意思|示意

The amounts of these trace elements required by crops are exceedingly small.

作物对这些微量元素的需求量非常小.

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The organic affinity of trace elements decreases further in anthracite.

到无烟煤阶段,有机态微量元素含量进一步降低.

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A variety of trace elements, sunlight reflection factor.

多种微量元素 、 阳光反射因子.

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Objective : To understand relationship between trace elements and malnutrition.

目的: 了解微量元素与儿童营养不良的关系.

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I'm reading trace elements out of it, mostly engine exhaust.

我正在读从它出来的痕迹元素, 大部份引擎用尽.

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The content of trace elements in horseshoe crab plasma was determined by atomic absorption spectrophotometry.

采用原子吸收分光光度法测定了鲎血中的微量元素含量.

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