短語(yǔ)詞組短語(yǔ)main surveying line span 主測(cè)深線間隔three -line long-span tunnel 線大跨隧道triple -line large-span tunnels 三線大跨隧道line scan pickup coil span 線路檔距longshaft span line 長(zhǎng)桿距線路coordinate of span line 跨逕線坐標(biāo)span scan line 區(qū)域掃描線long span transmission line system 大跨越輸電塔線躰系 返回 line span