valent的中文翻譯是什麼意思

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

產物聚合松香的軟化點為130℃,具有較高的應用價值.

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

本文綜述了低價鈦試劑引起的還原及還原偶聯反應.

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

本文就有關線性低價鉑系金屬簇合物的研究進展作一簡述.