In this thesis, we study the chemical element content change in suspension, solution and sediment state when in low, high and normal flow season.
研究化学元素在枯、丰、平三个水季悬浮态、 可溶态、 沉积态的含量变化。
This article according to chemical element content height Angle has analyzed 7 kind of cancer; succeeding in the high occur area soil environment from the soil.
此文从土壤中化学元素含量高低的角度分析了7种癌症高发区的土壤环境。
And according to the mineral composition, chemical composition and trace element content, the evolution series of the magma is redefined.
并依据各单元的矿物成分、化学成分、微量元素含量的变化，重新厘定了岩浆的演化顺序。
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