The application of the XY–H catalyst produced in Xiangyang Chemical Complex in the slurry process HDPE unit of Lanzhou Petrochemical Company was introduced.
结果表明,XY$CH催化剂活性较高,氢调敏感,可生产出各项性能均能达到国标优级品标准且拉伸强度和扯断伸长率均优于PZ催化剂的5000S产品。
Using two models of wind accretion,we calculate the relations between surface carbon Abumdance of secondary stars and the orbical periods for CEMP stars and CH stars,and calculate the relations of contamination factor R with orbital periods,and estimate variation of binary separation vs.
利用KOMIYA和LIU的2个星风吸积模型计算了富碳极贫金属星(CEMP星)和CH星表面C丰度与轨道周期P终值的关系、污染因子R同轨道周期P终值的关系,以及轨道半长轴A随伴星质量M2的变化。
