return flame 中文意思是什麼
return flame
解釋
回焰-
Gas welding equipment. hydraulic safety seals and combined " non - return valve flame arrestor " devices for acetylene generators. requirements and tests
氣焊設備.乙炔發生器用液壓安全密封件及止回閥滅火器組合裝置.要求和試驗 -
Return flame or return tube boiler
回焰鍋爐,回管鍋爐
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