normal operating condensate drain-off connections [土木建筑工程]經(jīng)常疏水裝置normal oil level [能源科學(xué)技術(shù)]正常油位normal oblique drawing [機(jī)械工程]過半斜圖normal neutral plane 幾何中性面normal mode solution [地球科學(xué)]正模解normal mode rejection ratio [電子、通信與自動控制技術(shù)]常模抑制比[計算機(jī)科學(xué)技術(shù)]常模抑制比normal mode equation [地球科學(xué)]正模方程normal mode 正常模式；標(biāo)準(zhǔn)振蕩方式；自然振蕩；固有狀態(tài)normal microbial flora [農(nóng)業(yè)科學(xué)]正常菌群normal market value [經(jīng)濟(jì)學(xué)]正常市價normal manual operation [計算機(jī)科學(xué)技術(shù)]正常人工操作normal maintenance operating plan [能源科學(xué)技術(shù)]正常檢修運轉(zhuǎn)計畫正常維護(hù)作業(yè)計畫正常檢修運行方式normal magnification [化學(xué)]正向放大率normal logarithmic distribution 對數(shù)正態(tài)分布normal linear sampling model [數(shù)學(xué)]正態(tài)線性抽樣模型normal level 正常水平；正常能級normal lens 標(biāo)準(zhǔn)鏡頭；普通鏡頭；常規(guī)鏡頭normal induction curve [數(shù)學(xué)]正常感應(yīng)曲線normal incident ray [能源科學(xué)技術(shù)]法向入射射線法向進(jìn)射射線normal incidence sound absorption coefficient [醫(yī)藥科學(xué)]垂直入射吸聲系數(shù)