他们用淡饭粗茶招待我们。
They treated us with simple food .
对粗茶皂素的提取纯化工艺进行了研究。
A simple purification method for crude tea saponin was described .
福建茶树良种的粗茶多糖提取试验研究
Studies on Extraction of Crude Tea Polysaccharide from Improved Tea Varieties in Fujian