electronalog电模拟electronn.电子electron-capture oxygen analyzer电子捕获氧分析仪electron-deficient rearrangement缺电子重排反应electron mocroprobe x ray analyzer微量探针X射线分析仪electron beam semiconductor device电子束半导体器件electron beam parametric amplifier电子束参放electron beam melting purification电子束精炼electron and electrical equipments电子电器electron backscattered diffraction电子背散射衍射electron beam Proximity correction电子束邻近效应校正electron transport system activity电子传递体系（ETS）活性