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| Chinese | English |
| 微痕量元素 | trace element |
| 微量元素 | trace element Any of various chemical elements that occur in very small amounts in organisms and are essential for many physiological and biochemical processes (任何在生物体中出现的数量很少的、但对于很多生理和生化过程必不可少的不同的化学元素。) |
| 微量污染物 | micropollutant Pollutant which exists in very small traces in water (存在于水中非常小的痕迹的污染物。) |
| 微量物质 | trace material 1. Both metals and non-metals, essential for the metabolic processes of algae, invertebrates and vertebrates. Organisms that derive nearly all their energy via photosynthesis are especially dependent upon dissolved trace substances. 2. Impurities that are present at small but detectable levels (1. 对于藻类、无脊椎动物和脊椎动物的新陈代谢过程必不可少的金属和非金属。对于几乎所有能量来源于光合作用的生物体尤其依赖于溶解的微量物质。2.在很小但可探测的级别出现的杂质。) |