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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