back span 中文意思是什麼

back span 解釋
反向間隔
  • back : n 1 背,背部;背脊;背面,反面;背後,後部,後面,裏面。2 (指)甲;(刀)背;(手)背;(書)背...
  • span : n 1 一?〈手指張開時,拇指尖至小指尖的長度,通常九英寸〉。2 (常有短的涵義的)一段時間;很小的間隔...
  1. No back - stays & inclined pylon cable - stayed bridge is a new one. she has very prominent mechanical characters that it substitutes the deadweight of inclined pylon for the back stays force to counteract the girder deadweight of main - span

    無背索斜塔斜拉橋結構體系新穎,其最大的受力特點是利用傾斜索塔的自重來平衡主跨主樑上的恆載和活載,而省去了背索及其索力。
  2. The cable - stayed bridge has become a more hopeful bridge style in the great span bridges because of its great merits, such as its great power for span, good performance of structure, brief construction, easy to maintaining, model legerity, lower cost and restricting noises. nowadays, some new bridge structures such as low pylon cable - stayed bridge and no back - stays & inclined pylon cable - stayed bridge etc. have become the ones for the building owners to appreciate when they construct the middle - span bridges

    斜拉橋以其跨越能力大,結構性能好,施工簡便,易於維修,外型輕巧,造價便宜,且能限制噪音等優點,已成為大跨度橋梁的一個發展方向。現今,矮塔斜拉、無背索斜拉等新穎的橋梁結構型式,在中等跨度的橋型中已佔有較大競爭優勢,成為許多業主欣賞的新橋型。
  3. Stephen thrusts the ashplant on him and slowly holds out his hands, his head going back till both hands are a span from his breast, down turned in planes intersecting, the fingers about to part, the left being higher

    斯蒂芬把?木手杖塞給林奇,緩緩攤開雙手,頭朝後仰。在距胸部一?的地方手心向下,十指尖交叉,若即若離。左手舉得略高。
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