研究了压力对溶剂脱沥青过程的影响.The effect of pressure on SDA process was studied.介绍了渣油溶剂脱沥青 - 脱油沥青气化 - 脱沥青油催化裂化组合工艺的研究及应用情况.The article introduces research and application situation of solvent deasphalting - deoiling asphalt gasificat...
Pratt & Whitney has announced that it will be making further job reductions.普惠公司宣布将进一步裁员。The first and most stubborn problem was that of reductions in the number of aircraft.最首要也是最棘手的问题是飞机数量的减少。Many companies have announ...