词汇	fresh-air volume
释义	fresh-air volume 新风量
随便看	pigmental degeneration pig-iron pig iron barrow pig-iron barrow pig iron breaker pig iron carbon content pig iron charge pig-iron charge pig iron containing boron pig iron cost pig iron electric furnace pig iron electrode pig iron for ductile cast iron pig iron for malleable cast iron pig iron for steel making pig iron for steel-making pig iron for steel manufacture pig-iron gray pig iron ladle pig-iron ladle Pig iron may contain 4% of carbon pig iron mixer pig-iron mixer pig-iron mixerhot-metal mixer pig-iron mottled