在毛主席无产阶级革命路线指引下,在党委的正确领导下,三年多来,我们在燃油锅炉的实际试验运用中,经过仔细调查,分析线路、地形、气温变化和气压升降情况,基本上摸索出上海——成都和上海——乌鲁木齐这两条线路的特点:气候变化多,地势幅度差别大,气压差别升降快(地处海拔3000米左右,气压下降30％)。秦岭地区海 Under the guidance of Chairman Mao’s proletarian revolutionary line and under the correct leadership of the party committees, over the past three years or so we have conducted thorough investigations and analyzed the changes in the routes, the topography, the temperature changes and the pressure rise and fall during the actual test and application of oil-fired boilers. Basically, Explore the characteristics of the Shanghai-Chengdu and Shanghai-Urumqi lines: more climatic changes, large difference in terrain amplitude, rapid rise and fall of pressure difference (located at an altitude of 3000 meters and a pressure drop of 30%). Qinling sea area