光滑的表现和非粘附特性保证HDPE管道具有较传统管材更高的输送能力，同时也降低了管路的压力损失和输水能耗。
Smooth performance and to ensure non-adhesion properties of HDPE pipe has a higher than conventional transmission capacity pipe, but also reduces the pressure loss in piping and water consumption.
同时，本文对整个液压系统回路进行了设计及其对管路系统压力损失、液压系统的温升进行了验算。
At the same time, the thesis design all hydraulic pressure system loop and checking computation the pressure losing in pipeline system, the changing temperature of hydraulic pressure system.
借鉴管路计算中局部阻力系数的概念，进一步计算了斜道区不同压砖情况下的压力损失系数。
Basing on the conception of local drag coefficient in the pipeline field, the pressure drop coefficient of fluid in each inclined flue under different condition of pressed brick was calculated.
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