acetylene
/əˈsetɪliːn; ə`sɛtlˌin/ n [U] (chemistry 化) colourless gas that burns with a bright flame, used in cutting and welding metal 乙炔; 电石气.
/əˈsetɪliːn; ə`sɛtlˌin/ n [U] (chemistry 化) colourless gas that burns with a bright flame, used in cutting and welding metal 乙炔; 电石气.
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