valent　是什么意思_valent　用英语怎么说_valent　的翻译_valent　翻译成_valent　的中文意思_valent　怎么读,valent　的读音,valent　的用法,valent　的例句

The product have a soft point 130 ℃ and high valent of use.

产物聚合松香的软化点为130℃,具有较高的应用价值.

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This paper reviews the reductive reactions and reductive coupling reactions induced by low - valent titanium reagents.

本文综述了低价钛试剂引起的还原及还原偶联反应.

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Tlae progress in linear chain clusters of low - valent platinum group metals is briefly reviewed.

本文就有关线性低价铂系金属簇合物的研究进展作一简述.

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