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局部水头损失计算表(m)
名称ξ值1.0m/s1.2m/s1.4m/s1.6m/s1.8m/s2.0m/s2.2m/s2.4m/s2.6m/s2.8m/s3.0m/s4.0m/s5.0m/s
蝶阀0.50.0260.0370.050.0650.0830.1020.1240.1470.1720.2000.2300.4080.637
截止阀8.00.4080.5870.8001.0401.321.6321.9762.3522.7603.2003.6726.52410.19
球阀0.50.0260.0370.050.0650.0830.1020.1240.1470.1720.2000.2300.4080.637
止回阀7.00.3570.5140.7000.9101.1551.4281.7292.0582.4152.8003.2135.7088.919
金属软管2.00.1020.1470.2000.2600.3300.2080.4940.5880.6900.8000.9181.6312.548
橡胶接头2.00.1020.1470.2000.2600.3300.2080.4940.5880.6900.8000.9181.6312.548
水泵2.00.1020.1470.2000.2600.3300.2080.4940.5880.6900.8000.9181.6312.548
电子除垢仪2.00.1020.1470.2000.2600.3300.2080.4940.5880.6900.8000.9181.6312.548
突然扩大1.00.0510.0730.1000.1300.1650.2040.2470.2940.3450.4000.4590.8151.274
突然收缩0.50.0260.0370.050.0650.0830.1020.1240.1470.1720.2000.2300.4080.637
逐渐扩大0.60.0310.0440.0600.0780.0990.1220.1480.1760.2070.2400.2750.4890.765
逐渐收缩0.30.0150.0220.0300.0390.0500.0610.0740.0880.1040.1200.1380.2450.382
弯头1.00.0510.0730.1000.1300.1650.2040.2470.2940.3450.4000.4590.8151.274
直流三通1.00.0510.0730.1000.1300.1650.2040.2470.2940
有哪些信誉好的足球投注网站
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