同时对提取、萃取的次数和提取时材料的干燥程度进行了研究。
Furthermore, The Times of extraction and the dryness degree of material were also discussed in th...
有机溶剂萃取研究中，对影响类胡萝卜素萃取率的各个因素，如提取溶剂、物料粒度、液料比、提取温度、提取次数、以及提取时间等分别进行了研究。
For solvent carotenoids extraction, the main affecting factors, such as solvent, grinding granularity, liquid-solid ratio, extracting times, temperature, and distilling time, were studied.
实验确定了有机溶剂萃取和酸洗次数及酸水解时间等操作参数。
The Times of organic solvent extraction and of acid washing and the duration of acidic hydrolysis needed are established.
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