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Acetylene|tag nrho

Acetylene

Paub meej txog kev siv, Tuav, thiab txaus ntshai nrog acetylene, Tshwj xeeb tshaj yog nyob rau hauv welding thiab tej ntaub ntawv.

Oops! Tsis muaj lwm yam ntsiab lus nyob.

Sim siv lub thawv rau hauv qab no:
Tau ib tsocai ?