lower-case letter 小寫字母lower-case (adj.) lower-case n.小寫lower-bound constraint [經(jīng)濟(jì)學(xué)]下界限制lower wing panel splicing [航空、航天科學(xué)技術(shù)]機(jī)翼下壁板對(duì)接件lower uterine segment [醫(yī)藥科學(xué)]子宮下段lower tween deck 下二層艙lower triassic series [地球科學(xué)]下三疊統(tǒng)lower tree layer 低樹(shù)層lower thwart [交通運(yùn)輸工程]低板凳lower threshold n. 下辨別閾lower the price 降低價(jià)格 削價(jià)lower temperature by ice-cap [醫(yī)藥科學(xué)]冰帽降溫lower surface grinding width [材料科學(xué)]下側(cè)平面研磨寬度lower surface camber [經(jīng)濟(jì)學(xué)]下曲面lower surface 下表面；底面lower supporting roller 下托錕lower stripper [機(jī)械工程]下脫料板lower steam inlet port [土木建筑工程]下進(jìn)汽口lower specification limit [統(tǒng)計(jì)] 下規(guī)定限