1) divalent element
二价元素
2) bivalent
[英][,bai'veilənt] [美][,baɪ'velənt]
二价的(化学元素)
3) dyad
[英]['daiæd] [美]['daɪæd]
二;一双;并向量;二价元素;二价基
4) element appraise
元素评价
5) element with electrovalence change
变价元素
1.
Using Eh-pH diagram and different geochemical characters of element with electrovalence change,stability of minerals in the nature,and coexisting relation and migration capability of elements with different electrovalence .
自然界中的变价元素广泛存在,不同价态的元素具有不同的地球化学性状,反映了不同的氧化还原环境,在成矿过程中形成各具特征的元素组合和矿物组合。
6) valuable elements
有价元素
1.
Study on extraction of valuable elements, exploitation of beneficial components and utilization of useful minerals for the mineral resources
矿物资源有价元素提取有益组分与有用矿物利用
2.
By means of examination in the laboratory and search of the literature and datum from home and abroad,some techniques and methods of extracting valuable elements from coal gangue and manufacturing high-attaching value chemical engineering products by using coal gangue were summarized.
通过实验室研究和对国内外文献资料的调研,综述了从煤矸石中提取有价元素及利用煤矸石深加工制造高附加值化工产品的技术和方法。
3.
And extracting valuable elements from coal fly ash is an important way of improving comprehensive utilization of it.
粉煤灰的综合利用是目前我国煤炭工业的一件大事,而从粉煤灰中提取有价元素是提高粉煤灰综合利用价值的重要途径之一。
补充资料：地下水水资源评价(见水资源评价)
地下水水资源评价(见水资源评价)
d ixiashui shuiziyuan Ping】ia地下水水资源评价见水资源评价。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条