英语词汇“ester gum”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	ester gum
释义	ester gum noun : a resinous ester or mixture of esters made by combining a resin of acid nature or resin acids with a polyhydric alcohol; especially : a hard usually pale substance made by heating rosin with glycerol and used in varnishes, lacquers, and printing inks
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