polysaccharide trace elements complex 多糖微量元素络合物
Owing to complex coal-forming process, the trace elements in coal present unique accumulation and scatter laws.
由于复杂的成煤过程，煤炭中微量元素呈现独特的集散规律。
The nitrogen, phosphor, potassium and other trace elements added for necessary of plants, it can be multi-functional and efficient liquid compound fertilizer complex.
配以植物所需的氮、磷、钾和微量元素后，可成为多功能、高效的液体复合肥。
Variation diagrams of major and trace elements imply that the Hekanzi alkaline complex was formed in an intra-plate environment, and its major magmatic process is dominated by batch melting.
河坎子碱性杂岩体形成于板内拉张环境，岩浆作用以批式部分熔融占主导地位。
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