Based on thermodynamics principle, the feasibility for melting iron borings in cupola was ana lysed.从热力学角度分析了在冲天炉内熔炼铸铁切屑的可行性.This paper reviews some equiblast cupolas, and introduces emphatically the snail like wind box ...
ITQ - 27 is stable to calcination in air , absorbs hydrocarbons , and is catalytically active for hydrocarbon conversion.ITQ-27对于在空气中煅烧而言是稳定的, 可以吸附烃类,以及对烃转化具有催化活性.Any of three gaseous isomeric ethylene hydrocarbons , C 4...
It was snowing hard by then.当时雪下得很大。After it had stopped snowing, we all went sledging.雪停了以后我们全去坐雪橇玩.Ordinarily It'should be snowing at this time of the year.按说这时候该下雪了....