给水铸铁管计算表表1-33序号管径d(mm)75100150200250流量q(L/S)iviviviviv12247.9828.40.460.931.940.690.260.52 3661.51.39140.781.870.34 481091.8623.91.043.140.460.7650.26 5101712.3336.51.304.690.571.130.32 6789101112121416182022242462.7652.671.693.51181 ......(本文共 1418 字 ) [阅读本文] >>