渣油加工有脱碳工艺 、 氢工艺及沥青气化工艺.Residue processing can be summarized as decarbonization, hydrogenation and asphalt gasification.含碳的铌合金,若在高温下受氧沾污,易产生脱碳现象.In niobium alloy containing carbon occurs decarburization in case of contami...
He had tattooed the name " Marlene " on his upper arm.他将"玛琳 " 这个名字刺在臂的上方.The sailor had a heart tattooed on his arm.那水兵在手臂上刺上一颗心.He had the words "Angie loves Ian" tattooed on his left shin.他在左小腿上文了“安吉爱伊恩”几个字。There'...