... 虫胶清漆 shellac varnish ; lacvarnish ; varnish shellac ; lac acid varnish 虫胶树脂 lac resin ; shellac resin ; lac acid resin 虫胶酯 shellac ester ...
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lac acid resin
紫胶酸树脂
以上为机器翻译结果，长、整句建议使用 人工翻译 。
The changes of molecular weight, life under heat, acid value, hydroxyl value and chlorine content of lac resin during bleaching and de-chlorinating processes have been studied.
本文研究了紫胶树脂在漂白和脱氯过程中分子量、热寿命、酸价、碘价、羟基值和氯含量的变化情况。
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