stack gas desulfurization technique

例句：

1. 1. The stack gasdesulfurization technology is widely used in the steel industry to reduce emissions of harmful gases.
   堆气脱硫技术在钢铁工业中被广泛使用，以减少有害气体的排放。
2. 2. The development of this technology has greatly improved the environmental protection of the steel plant.
   这项技术的发展极大地改善了钢厂的环境保护。
3. 3. The application of stack gas desulfurization technology has significantly reduced the pollution caused by the steel production process.
   堆气脱硫技术的运用已显著减少了钢铁生产过程造成的污染。