首站进、出口压力pZ1或pQ1稍有下降,对整条管道系统的输气量都会有较明显的影响。The slight decrease of inlet and outlet pressure pZ1 or pQ1 in the first station will have a more obvious impact on the gas transmission capacity of the whole pipeline system,而输气管的终点压力pZ,即使在较大范围内变化,对整个系统输气量的影响也不大。However, the terminal pressure pZ of the gas pipeline, even if it changes in a large range, has little impact on the gas delivery volume of the whole system.
首站进、出口压力pZ1或pQ1稍有下降,对整条管道系统的输气量都会有较明显的影响。The slight decrease of inlet and outlet pressure pZ1 or pQ1 in the first station will have a more obvious impact on the gas transmission capacity of the whole pipeline system,而输气管的终点压力pZ,即使在较大范围内变化,对整个系统输气量的影响也不大。However, the terminal pressure pZ of the gas pipeline, even if it changes in a large range, has little impact on the gas delivery volume of the whole system.