短語詞組短語spontaneous combustion hazard zone 自燃危險(xiǎn)區(qū)域spontaneous combustion danger zone 自燃危險(xiǎn)區(qū)域secondary combustion zone 次級燃燒區(qū);次級反應(yīng)區(qū)combustion area combustion zone 燃燒帶oxidization combustion zone 氧化自燃帶thickness of combustion zone 反應(yīng)區(qū)厚度optimum combustion zone 最佳燃燒區(qū)dense phase combustion zone 密相燃燒區(qū) 返回 combustion zone