wolfram造句怎么写

"Tungsten (or wolfram): Metallic chemical element, one of the transition elements, chemical symbol W, atomic number 74."

The product vacuum arcing chamber adopts porcelain insulation case, the contactor adopts wolfram and copper material, it has the advantage of reliable performance, long life, small volume, no explosion danger, no pollution environment.

The copper, lead, zinc wolfram and molybdenum multimetal deposit in songjiang is a middle-sized buried skarn deposit.

The most significant fields are tobacco, paper, wolfram, camphor, farm implements and fertilizers (such as lime).

In the handicraft industries the production of farm implements and lime is being restored, and we are beginning to restore wolfram production.