• 1. used as catalyst: 作为催化剂
• 2. used as a catalyst: 作为催化剂

• 1.Nano-Ni was first used as catalyst for disproportionation of resin acid.
  将纳米镍催化剂首次应用于树脂酸的歧化反应中。
  dict.yoduao.com
• 2.Solid acid can be used as catalyst for the esterification instead of sulphuric acid.
  固体酸能够代替硫酸作为酯化催化剂。
  dict.yoduao.com
• 3.Stannic Chloride can be used as catalyst for esterification instead of sulphuric acid.
  四氯化锡能代替硫酸作为酯化催化剂。
  dict.yoduao.com

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