Metal passivator can inhibit nickel and vanadium pollution on the catalytic cracking catalysts and improve the property of polluted catalysts.
金属钝化剂可以抑制镍和钒等金属对催化裂化催化剂的污染，使被污染催化剂的性质得到改善。
To remove dissolved oxygen in the molten metal prior to pouring, elements have been added which have high affinity for oxygen such as titanium, vanadium, niobium and magnesium.
为了在浇铸之前消除熔化金属中的溶解氧，需要在金属中添加具有很高的氧亲合力的元素，如钛，钒，铌和镁。
At a critical temperature, vanadium oxide films undergo phase transition between metal phase to semi-conducting phase.
在某一特定的温度处，氧化钒薄膜发生金属-半导体相的转变。
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