... 全部陈设 decor 全金属催化剂 all metal catalyst 全金属成型鼓 solid deck drum ...
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The supported nickel catalyst was prepared in which basic oxides and transition metal oxides were added as promoter, and all the oxides in amount were less than 30% of the mass of catalyst.
制备了负载型镍催化剂，并加入碱性和过渡金属氧化物助剂，各种氧化物总负载量低于催化剂质量的30 %。
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