第二级: second stage分枝: branch; virgation; sprouting ...二级分类: reclassify二级分离器: second-stage separator二级分裂: second-order splitting二级分馏塔: sceondary fractionator; secondary fractionator二级分配: two-level allocation二级分配网: sdn secondary distribution network二级分析: secondary analysis二级分组: reclassify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二级分页装置: secondary paging device第二次分枝: secondary tassel branch第二级光谱，第二级谱: second order spectrum主茎的第一级分枝: the first order branching of the main stem; thefirstorderbranchingofthemainstem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第二级点火: second-stage ignition第二级反射: second order reflection第二级飞行: second-stage flight
