免费国精产品自偷自偷免费看_在线看片成人_www.77伦理bt.com_特级黄色一级片_免费夜色污私人影院在线观看_国严精品久久久久久亚洲影视

架空線路比載計算                                                            
參數    導線每千米質量q(kg)    導線計算直徑d(mm)    導線計算截面S(m㎡)    覆冰厚度b(mm)                最大風速υ(m/s)                覆冰風速υ(m/s)              
                                                            
數值    598.00     16.72     167.37     10.00                 30.00                 10.00                                                                        
比載名稱    自重比載g1    冰重比載g2    自重和冰重的綜合比載g3    風重比載g4                覆冰時的風壓比載g5                自重和風壓構成的總和比載g6        自重、冰重和風壓所構成的總和比載g7    
                υ<20m/s        υ>20m/s        υ<20m/s        υ>20m/s                    
                d>17    d<17    d>17    d<17    d>17    d<17    d>17    d<17                
比載值*0.001(N/m.m㎡)    35.01     44.27     79.28     60.58     66.08     51.49     56.17     14.78     16.13     12.56     13.71     69.97         80.65    

學習學習