管段长度 meaning in English

length of pipe section
length of the pipe

The calculation result of passed flow rate in pipe section of pipeline network is significantly influenced by the momentum exchange and the local energy losses at junctions for the pipeline network comprised of the pipes of larger diameter and shorter length
摘要对于管径较大、管段长度较短的管网，结点处的动量交换和局部能量损失显著影响管网中管段通过流量的计算结果。
On the base of analysing the ordinary design methods , aiming to the minimum annual cost or investment , taking the pipe length and water pump lift as decision - making variables , the linear programming models are presented to optimize the diameters of main network and field network
论文首先分析了常规微灌系统规划设计方法，在此基础上，以年费用或投资最小为目标，用离散管径方法，以管段长度和水泵扬程为决策变量，分别建立了水泵加压式和自压式干管管网优化设计以及田间管网优化设计线性规划模型。