closed conduit

On the basis of defining energy dissipation ratio in a closed circular conduit as specific energy loss of hydraulic jump divided by specific energy of initial flow, this paper derives a basic equation for calculating this energy dissipation ratio and describes its characteristic.

在定义管道内水跃的消能系数为水跃单位能量损失与跃前断面水流原有单位能量的比值的基础上，推导出计算消能系数的基本公式，并分析了它的规律性。

Experimental Studies on Reducing Discharge Capacity in Closed Conduit Due to Inflow in Gate Shaft

闸门井进水减小泄水道泄流能力试验研究

Suspension index of the flow in a closed conduit is analysed analysed considering the mechanism of the turbulent sediment sUSpension.

根据紊动悬浮泥沙的机理，本文分析了泥沙在管路中输送时有效悬浮指标的表达式。

The utility model belongs to a scope of electric pipe connection pieces, in particular to a muff-coupling clamping closed galvanized steel conduit joint device.

本实用新型公开了属于电气管线连接件范围，特别涉及一种套接紧定式封闭型镀锌钢导管接头装置。