第一级: first order; first step; fir ...加热器: calorifier; stove; heat boos ...主加热器 第一级加热器: primaryheater汽轮机第一级抽汽加热器: top heater第一级蒸汽过热器: presuperheater分级加热法: bleeding逐级加热: step heating第一级: first order; first step; first stage逐级加热技术: incremental heating technique加热器: [工业] calorifier; stove; heat booster; heat installation; heater; heating apparatus; heating appliance; heating body; warmer发热器，加热器: heater加热器；发热器: calorifere; heater加热器；预热器: heat booster; heatbooster第一级光谱，第一级谱: first order spectrum一级过热器: primary superheater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
