三岔管 meaning in English

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The 3 - d numerical simulation on bifurcated pipe flow
三岔管水流数值模拟研究
Numerical simulation on hydrodynamic characteristics of bifurcation pipe with internal crescent rib
内加强月牙肋三岔管水力特性数值模拟
The numerical simulation of the flow in the three diverge pipe with crescent costal board and study on head loss
有加强肋板的三岔管水流数值模拟及水头损失研究
Optimal width ratio of crescent rib in bifurcation of pumped storage power station based on numerical simulation of flow
基于水流数值模拟的抽水蓄能三岔管肋宽比最优化分析