polygas

例句：

1. 1. The polygas mixture is used in the production of plastics.
   这种多气体混合物用于生产塑料。
2. 2. The polygas mixture was found to have a significant impact on the environment.
   这种多气体混合物被发现对环境产生了重大影响。
3. 3. The polygas mixture was analyzed using gas chromatography.
   这种多气体混合物通过气相色谱法进行了分析。