multiple extraction meaning in English

多次抽提
多次提取
多次萃取
多效提取
多重萃取

Computationally , no multiple extraction operations from sub - constituents to the same damain are possible
从?法操作上讲，在同一?域内对下位成分进?多项位式提取是?可能的。
The technique requires multiple extractions from the sample vial . this is very useful for developing method and running special sample
对于同一样品瓶的多次顶空提取，得到多个样品色谱图，用于方法的开发和对特种样品的分析。