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℃400.050.050.060.070.090.110.150.210.3410.050.060.070.080.090.120.150.220.31420.050.060.070.080.10.120.160.220.32430.060.060.070.080.10.130.170.230.33440.060.070.080.090.110.130.180.240. ......(本文共 15694 字 ) [閱讀本文] >>