Under these conditions, the extraction yield of single - stageextraction is 56% and that of four - stageextraction is over 98 %.
在最佳工艺条件下单级萃取率为56%左右，四级萃取率可达98%以上。
2
Both the extraction ratios of countercurrent multi-stageextraction and cross current multi-stageextraction were higher than single-stageextraction.
多级逆流或错流萃取的萃取率明显高于单级萃取。
3
Compared with the traditional reactor, the single stageextraction distribution ratio increasing by about 20% in the impinging stream reactor under the same conditions.