extraction test meaning in English

抽取试验
抽提试验
萃取试验

The mathematical analysis and extraction test of the aqueous materials form tea
茶叶中水浸出物的提取试验及数学分析
Extraction tests were conducted on asphalt concrete specimens sampled from field roads . asphalt concrete and aggregate gradation were compared to design and acceptance specifications
对实际路面取样进行了抽提试验并与规范进行了比较分析。
The extraction test to the different class signals tell us that the correlation dimension and generalised dimensions may effectively involve the class information of different ships , otherwise the h2 entropy is difficult to classify the targets
通过对不同类别信号的特征提取表明，关联维数和广义维数能有效地代表不同类别的舰船特征，而h _ 2熵特征并不明显。