第二级: second stage点火: stir up trouble第二级药柱点火: second grain firing分级点火: multistep ignition; stage ignition第二级发动机点火爆管: second-stage squib单级点火上升: single-burn ascent第二级: second stage◇第二级电压范围(30伏至175伏) second voltage range; 第二级校正 second-order correction第二级光谱，第二级谱: second order spectrum倒数第二级: penultimate stage第二级产业: secondary sector of economic activity第二级潮汐: tide of second order第二级处理: secondary treatment第二级次: second order第二级的: partial第二级地址: address second-level; address, second-level第二级反射: second order reflection第二级飞行: second-stage flight第二级分枝: second-order branching第二级光谱: secondary spectrum第二级活动: secondary activity; secondaryactivity第二级火箭: second-stage rocket第二级记忆: secondary memory第二级酒: fines第二级爵士: knight commander第二级滤器: secondary filter
