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用惰性气体部分或全部代替泡沫气泡中的空气可以进一步提高泡沫的灭火效果.全苏矿业科研所研制出了一种用液氮产生惰性泡沫的方法.这种方法初次在《沙赫焦尔斯克》无烟煤生产联合公司的《康达尔那亚》矿井灭火时应用过.
The replacement of air in the foam bubble with some or all of the inert gas can further enhance the foam’s extinguishing effect.Sunsu Mining Research Institute has developed a method of producing inert foam with liquid nitrogen.This method for the first time in the “Shakhorsk Anthracite production company ”Condandanah" mine fire extinguishing used.