基本解释n.濃度同根派生 concn相关词英汉例句用作名詞 (n.)The method of application is dissolve by cold water to different concn.用冷水溶解配成不同濃度的溶液使用。The effect of immersion toxicity was gradually weakened with the increase of the extract concn.隨後隨濃度的提高浸殺傚果又逐漸減弱。concn更多例句