Preparative chromatography
[化] 制备色谱法
🧩 词语组成解析
a. 准备性的, 预备性的\\nn. 预备, 准备, 预备信号
🗣️ 情景例句
We have four people in the family, my parents, my elder brother and I.
我家有 4 口人,我的父母,我的哥哥和我。
Sometimes I make mistakes when I speak English.
当我说英语时,有时我犯错误。
Above all, he refused to make any personal gain from his political work.
尤其是,他拒绝从所从事的政治事业中谋取个人利益。
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