useful energy product造句

例句与造句

1. The production of Syngas started in the 1950s, which is a process that converted waste gases from oil refineries to a useful energy product.
2. The production of town gas was changed in the late 1950s when Syngas production was developed, a process that converted waste gases from oil refineries to a useful energy product.
3. It's difficult to find useful energy product in a sentence. 用useful energy product造句挺难的