a substance from which another substance is formed (especially by a metabolic reaction)
a person who goes before or announces the coming of another
something that precedes and indicates the approach of something or someone
造句
Rare earth luminescence materials of alkaline earth stannates have also been prepared via thermal decomposition of hydroxo stannate precursors. 利用某些新型帶羥基的堿土錫酸鹽作為前驅(qū)體，固相反應合成摻稀土的錫酸鹽發(fā)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. 摘要茂金屬化合物中兩個茂環(huán)可以通過一個或兩個橋基相連接，形成各種橋聯(lián)茂金屬催化劑前驅(qū)體。
近義反義詞
precursor
precursor time
precursor rRNA
precursor cell
Precursory wave
precursor fault
precursor decay
precursory cell
precursor power
Precursor means
precursor pulse