| # | Concept | Culture | Statement | Freq. |
|---|---|---|---|---|
| 1 | acetylene | industrialized countries | Acetylene is commonly used as a fuel for welding and cutting in industrial applications. | 1 |
| 2 | acetylene | industrialized countries | Used as a fuel for welding and cutting torches, and as a raw material in the chemical industry | 1 |
| 3 | acetylene | industrialized countries | Used as a fuel for welding and cutting in industrial applications | 1 |