镍对催化裂化催化剂的中毒作用已被国内认识，但钒对催化裂化催化剂的中毒影响尚未引起人们重视。
It has been acknowledged that nickel has a poisonous effect on FCC catalyst in China, but it has still not recognized that Vanadium has a poisonous effect on the FCC catalyst too.
镍对催化裂化催化剂的中毒作用已被国内认识，但钒对催化裂化催化剂的中毒影响尚未引起人们重视。
It has been acknowledged that nickel has a poisonous effect on FCC catalyst in China, but it has still not recognized that Vanadium has a poisonous effect on the FCC catalyst too.
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