The new visbreaking process with de - oiled asphalt feedstock is discussed.论述了以脱油沥青为原料的减粘裂化新工艺.Hydrogen is an important feedstock used in petrochemical enterprises � � hydrogenation process.氢气是石化企业加氢工艺的重要原料.The product m...
U 4 triode connected: Medium MU small mass filamentary heating structure.三极管接法): 中Mu小型灯丝结构.Low MU Thoriated Tungsten filamentary heating structure.低Mu敷钍灯丝结构.High MU Thoriated Tungsten filamentary heating structure.高Mu敷钍灯...