催化剂: catalyst; catalytic agent的: 4次方是 The fourth power of 2 i ...密度: density; thickness催化剂的密度: density of catalyst催化剂的复活: revivification of catalyst催化剂的汞法: mercury density of catalyst催化剂的模制: molding of catalyst催化剂的磨耗: attrition of catalyst催化剂的收缩: contraction of catalyst催化剂的污损: fouling of catalyst催化剂的主体: body of catalyst催化剂堆密度: catalyst bulk de ity; catalyst bulk density补充催化剂的加料: make-up catalyst addition催化剂的充气比重: aerated density of catalyst催化剂的固体床: solid bed of catalyst催化剂的活性率: acitvity rating of catalyst催化剂的活性评价: activity rating of catalyst催化剂的活性试验: activity test催化剂的可燃载体: combustible support催化剂的裂化特性: cracking characteristic of catalyst; cracking characteristics of catalyst催化剂的磨耗损失: attrition loss of catalyst催化剂的摩尔比例: molecular proportion of catalyst催化剂的耐久性: durability of catalyst催化剂的收缩状态: contraction schedule催化剂的选择性: selectivity of catalyst