Read Edit View history 乙炔 yǐquē acetylene Origin Definitions Defs Strokes Stroke Words Sentences Sents created sense approved 乙炔 · yǐquē · acetylene 2026/03/04 乙炔 yǐquē acetylene a colorless, flammable gaseous hydrocarbon (C2H2) used in welding and chemical synthesis 这种焊接工艺需要用到乙炔气体。 noun created sense Mar 4, 2026, 02:25 AM