Gray desulfurization process

例句：

1. 1. The Gray desulfurization process is an effective method for removing sulfur from coal.
   灰脱硫工艺是一种有效的从煤炭中去除硫的方法。
2. 2. The Gray desulfurization process has been widely used in the power industry to reduce emissions.
   灰脱硫工艺在电力行业中被广泛使用，以减少排放。
3. 3. The Gray desulfurization process has been shown to be more cost-effective than traditional methods.
   灰脱硫工艺已被证明比传统方法更经济。