precursors

precursors读音音标

英 [pri:\'kɜ:səz]

美 [pri\'kɜsəz]

precursors意思解释

n.

先驱( precursor的名词复数 )；

先行者；

先兆；

初期形式

英英释义

n.

a substance from which another substance is formed (especially by a metabolic reaction)

a person who goes before or announces the coming of another

同义词：forerunner

an indication of the approach of something or someone

同义词：harbingerforerunnerherald

词组短语

precursor chemicals

双语例句

Rare earth luminescence materials of alkaline earth stannates have also been prepared via thermal decomposition of hydroxo stannate precursors.利用某些新型带羟基的碱土锡酸盐作为前驱体，固相反应合成掺稀土的锡酸盐发光材料。The two cyclopentadienyl groups in metallocence compexes can be linked by one or two bridging groups to form ansa-metallocence catalyst precursors.摘要茂金属化合物中两个茂环可以通过一个或两个桥基相连接，形成各种桥联茂金属催化剂前驱体。