... oxyacetylene welding outfit氧乙炔气焊机 oxygen welding氧焊; 氧气焊接 oxyhydrogen welding氢氧焊; 氢氧焰焊接 ...
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氧气焊接橡胶管 oxygen welding rubber hose
氧气乙炔焰焊接 acetylene welding
氧燃料气焊接 oxy-fuel gas welding ; fuel gas welding
氧碳化钙气氧炔焊接机 oxyacetylene welding outfit
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