英语词汇“ulmin”的读音、翻译、释义、用法及例句-范文网

词汇	ulmin
释义	ulminn.【化学】棕腐质；赤榆树脂。ul-mic, ulminic adj.棕腐质的 (ulmic acid 【化学】赤榆酸，棕腐酸)。
随便看	stamp stamp collector stamp duty stamp note stamp tax stamp-office stamp-paper stampage stampalbum stampede stamper stamping ground stampmachine stampmill stan stance stanch stanchion stand stand camera stand oil stand-alone stand-down stand-fast stand-in

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