单词：countercurrent extraction
countercurrent extraction的用法和样例：
例句
- Black tea extracts are normally produced by a hot or boiling water extraction process, usually a countercurrent process.红茶的提取物通常是用热水或沸水通过逆流萃取工艺来制取的。
- Adesign calculation method has been proposed for the counterflow extraction process of partially miscible ternary systems.针对部分互溶三元系逆流萃取过程提出了一种设计型精确计算方法。
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