在线词典
在线词典,是一款在线使用的中英文查词词典。本工具支持查询英文和中文单词及词组的含义,查询效率高、结果丰富,包括单词变体、常用短语、英英释义、同义词、同根词、词语辨析等,是外语学习者必备的在线查词工具。
输入要查询的单词:
Big Bore Resin
网络释义
大孔树脂
Objective To study the separation and purification of Chinese herbs to enhance the content of the main effectiveconstituents and their stability. Methods To use methods such as Ethanol preipataion,big bore resin,filtration or centrifuge to get theefficient constituents. Resultds Each method has its own advantage and proper scope. Conclusion In order to separate and purifyChinese herbs, different methods should be applied according to different samples.
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