第一级: first order; first step; fir ...记忆: remember; recall初级记忆: primary memory次级记忆: secondary memory第二级记忆: secondary memory第三级记忆: tertiary memory二级记忆: secondary memory高级记忆: eidetic memory第一级: first order; first step; first stage三级存储器, 三级记忆: three-level memory第一级光谱，第一级谱: first order spectrum第一级侧脉: lateral vein of the first order第一级产业: primary sector of economic activity第一级次: first order第一级导叶: first stage guide vane第一级的: primary第一级地址: first level address第一级反射: first order reflection第一级飞行: first-stage flight第一级股市: mainboard第一级光谱: primary spectrum; spectrum of first order第一级焊接: first class welding第一级活动: primary activity; primaryactivity第一级检验: first order tests第一级卡圈: first stage snaring
