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。
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.
我司出口钛，钽，铌，锆，铌金属材料及其制品。
We export Titanium, Tantalum, Niobium, Zirconium and Nickel materials and finished products, kindly contact for inquiry!
构成所述电极催化剂的金属元素优选为选自铌、钛、钽和锆中的一种金属元素。
The metal element constituting the electrode catalyst is preferably one metal element selected from the group consisting of niobium, titanium, tantalum and zirconium.
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