The tempering operation may be described as one of precipitation and agglomeration or coalescence of cementite.
回火作业可以描述为渗碳体析出和凝聚或聚结的过程。
Fuel delivery with protection device to prevent tempering, owning venting mechanism to prevent the fuel deflagration in the furnace. Therefore the boiler is of safe and reliable operation.
燃料输送设计有防止回火的保护装置，有防止燃料在炉膛内爆燃的泄爆机构。因此锅炉运行安全可靠。
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