gas-cap expansion

例句：

1. 1. The gas cap expansion is a common problem in the oil industry.
   气体顶扩张是石油工业中常见的问题。
2. 2.The gas cap expansion can cause significant damage to the environment.
   气体顶扩张会对环境造成严重的损害。
3. 3. The gas cap expansion is a complex phenomenon that requires careful analysis.
   气体顶扩张是一个复杂的现象，需要仔细分析。