| 乙炔 | yǐ quē | acetylene; ethyne C2H2 | |
| 氧乙炔 | yǎng yǐ quē | oxyacetylene | |
| 氧乙炔炬 | yǎng yǐ quē jù | an oxyacetylene torch | |
| 氧乙炔焊 | yǎng yǐ quē hàn | oxyacetylene welding | |
| 氧乙炔焊炬 | yǎng yǐ quē hàn jù | oxyacetylene torch |
| 1 | The preferred method is by oxyacetylene flame . | |
| 2 | A rip-tooth of the sky's acetylene; | |
| 3 | Duplication of bands in this region is also shown by trifluoropropyne and perfluoro2-butene. | |
| 4 | Duplication of bands in this region is also shown by trifluoropropyne and perfluoro2-butyne. | |
| 5 | Alkynes have one or more triple bonds, the carbon atoms sharing three pairs of electrons. |