当脱硫剂累计饱和硫容达20%时,可用于生产硫酸.It was useful forH 2 SO 4 production when the accumulative saturationS capacity reached 20 %.目前使用氧化钙复合的镁基脱硫剂较为合理.It is rational to use complex desulphurization agent for pretreating hot metal.用途: ...
Her masts leveled with the spires of churches.船的桅杆和教堂的塔尖一样高.White church spires lift above green valleys.教堂的白色尖顶耸立在绿色山谷中.He could see grimy roofs, factory chimneys and church spires.他可以看到肮脏的屋顶 、 工厂的烟囱和教堂的尖顶....
She was really quite perturbed at the prospect.她对前景十分担心。I am deeply perturbed by the alarming way the situation developing.我对形势令人忧虑的发展深感不安.Mother was much perturbed by my illness.母亲为我的病甚感烦恼不安....