catalysts催化剂catalystn.催化剂；刺激因素catalyst-oil mixing heat油-剂混合热量catalyst grading technology级配技术Catalyst surport separation催化剂分离catalyst preparation vessel配制罐catalyst - polymerization催化聚合catalyst-to-crude ratio催化剂对原料比catalyst-to-charge ratio[化] 催化剂对进料比catalyst loading noble metal负载贵金属催化剂catalyst induction procedure催化剂引入手续catalyst up-flow principle[化] 催化剂上流原理