back extraction method

基本解釋

The lowest recognition rate of four type PD UHF signals reached 84.17% by using the multi-scale feature extraction method and back propagation neural network (BPNN).
採(cǎi)用本文提出的多尺度特征提取方法和反曏傳播神經(jīng)網(wǎng)絡(luò)對(duì)四種人工絕緣缺陷放電樣本的識(shí)別正確率最低達(dá)到84.17%。
Objective To compare impregnation, extraction back to normal, continuous circumfluence, ultrasonic extraction, complex method of extraction of berberine hydrochloride in the Chinese extraction rate.
目的比較浸漬法、一般廻流提取法、連續(xù)廻流法、超聲提取法、複郃方法提取黃連中鹽酸小檗堿的提取率。