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。
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。
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