Graebe-ulmann carbazole synthesis
[化] 格雷伯-乌尔曼咔唑合成法
🧩 词语组成解析
n. [化]咔唑
🗣️ 情景例句
Is Li Ying in?
李英在家吗？
Had so much fun
玩得开心
Textile business has become more and more difficult since the competition grew.
随着竞争的加剧，纺织品贸易越来越难做了。