造價(jià)通
更新時(shí)間:2025.06.07
萬(wàn)里長(zhǎng)城:世界偉大的建筑工程奇跡

格式:pdf

大小:1.4MB

頁(yè)數(shù): 3頁(yè)

萬(wàn)里長(zhǎng)城是我國(guó)古代的一項(xiàng)極為重要的軍事工程,它東起河北的山海關(guān),橫跨山西、內(nèi)蒙、陜西、寧夏、西迄甘肅嘉峪關(guān),全長(zhǎng)一萬(wàn)二千多華里。遠(yuǎn)在戰(zhàn)國(guó)時(shí)代(公元前475—221年)萬(wàn)里長(zhǎng)城就開始修建。當(dāng)時(shí)主要是為了防御北方諸侯國(guó)和游牧民的滋擾而建的防衛(wèi)性城墻。秦(公元前221—207年)續(xù)建,形成了西起臨洮,東至遼東的萬(wàn)里長(zhǎng)城,現(xiàn)存長(zhǎng)城是秦漢之后,經(jīng)北魏、北圍、北齊的隋、宋、元各

寫真“萬(wàn)里長(zhǎng)城第一隧”——中鐵十四局二公司司馬臺(tái)長(zhǎng)城隧道施工紀(jì)實(shí)

格式:pdf

大?。?span class="single-tag-height">1.3MB

頁(yè)數(shù): 6頁(yè)

The history is the aged with best memory. The 50-year-long China Railway Shisiju Group Corporation No. 2 Company with glorious histories has built Beijing-Jiulong Railway, Qinghai-Tibet Railway, Beijing-Shanghai Expressway and other key projects in the vast land of China. The Company has obtained one and another award of national and provincial excellent projects, created one and another perfect records and staged one and another splendid stories. Si Ma Tai Tunnel, the “No. 1 Tunnel of the Great Wall”, witnesses the excellent performance of this “Railway Army” once again.

熱門知識(shí)

萬(wàn)里長(zhǎng)城浮雕圖

精華知識(shí)

萬(wàn)里長(zhǎng)城浮雕圖

最新知識(shí)

萬(wàn)里長(zhǎng)城浮雕圖
點(diǎn)擊加載更多>>

相關(guān)問答

萬(wàn)里長(zhǎng)城浮雕圖
點(diǎn)擊加載更多>>
專題概述
萬(wàn)里長(zhǎng)城浮雕圖相關(guān)專題

分類檢索: