介绍了用离心沉降对紫胶脱蜡和四氯化碳萃取精制紫胶蜡的研究过程和结果。
The research is made on dewaxing shellac by centrifugal subside and refining shellac-wax by Carbon tetrachloride extraction.
介绍了用离心沉降对紫胶脱蜡和四氯化碳萃取精制紫胶蜡的研究过程和结果。
The research is made on dewaxing shellac by centrifugal subside and refining shellac-wax by Carbon tetrachloride extraction.
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