effective filtration rate [醫(yī)藥科學]有效濾過率effective filtration area [機械工程]有效過濾面積effective filing date [法學]實際申請日期effective figure 有效數(shù)字effective field theory [物理學]有效場論effective fertility [醫(yī)藥科學]有效生殖率[地球科學]有效肥力effective f-number [攝影]有效ｆ數(shù)effective exposure time 有效曝光時間effective exposing frequency [文學]有效暴露頻次[經(jīng)濟學]有效暴露頻次effective exchange rate 有效匯率effective earth radius [地球科學]有效地球半俓有效地球半徑effective dynamic permeability [經(jīng)濟學]有效動磁導率effective drum diameter [電子、通信與自動控制技術(shù)]磁鼓有效直徑effective drug duration [醫(yī)藥科學]藥物有效期effective double-work [計算機科學技術(shù)]有效雙字組effective dose 有效劑量，有效量effective direct radiation [醫(yī)藥科學]有效的直接照射effective diameter [數(shù)] 有效直徑；節(jié)徑；中徑effective demand n. [經(jīng)] 有效需求effective degree of freedom [生物學]有效自由度