炔

乙炔

yǐ quē

acetylene

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

炔烃

quē tīng

(chemistry) alkyne