inert gas shielded melting

例句：

1. 1. The process of inert gas-protected melting is crucial for the quality of the final product.
   惰性气体保护熔炼过程对于最终产品的质量至关重要。
2. 2. During the inert gas-enclosed melting stage, the molten metal is exposed to a controlled environment.
   在惰性气体封闭熔炼阶段，熔融金属处于受控环境中。
3. 3. The inert gas-protected melting technique has been widely used in the production of high-quality steel products.
   惰性气体保护熔炼技术已被广泛应用于生产高品质钢材产品。