单词：concn
音标：['kɒnkn] ；
abbr. concentration 集中; 集合; 专心; 浓缩
concn的用法和样例：
例句
用作名词(n.)
- The method of application is dissolve by cold water to different concn.用冷水溶解配成不同浓度的溶液使用。
- The effect of immersion toxicity was gradually weakened with the increase of the extract concn.随后随浓度的提高浸杀效果又逐渐减弱。
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