所屬欄目:配網(wǎng)工程
代表檔距Lr(m)不同氣溫下代表檔距的安裝弧垂fr(m)-40℃-30℃-20℃-10℃0℃+10℃+20℃+30℃+40℃400.070.070.090.10.130.170.230.320.43410.070.080.090.110.140.180.240.330.44420.070.080.10.120.140.180.250.340.46430.080.090.10.120.150.190.260.360.47440.080.090.110.130.160.20.270.370.4 ......(本文共 15734 字 ) [閱讀本文] >>