large ventilation design 中文意思是什麼

large ventilation design 解釋
大面積通風設計
  • large : adj 1 （體積，空間，數量，規模等）大的，巨大的；（權限等）廣泛的。2 （心胸）寬廣的，度量大的；（...
  • ventilation : n. 1. 通風，換氣（法）；通風裝置。2. 發泄，發表；（問題的）公開討論；訴諸輿論。
  • design : vt 1 計劃，企圖，立意要…。2 指定，預定；留給，留著。3 設計，草擬，擬定，籌劃；起草，畫草圖，打（...
  1. Considering that the characteristics of our country ' s highway tunnels are always of long spans, tabular and of various geometry, by means of thorough analysis of the different problems existed in the design of support structures of the tunnels at present, this paper pays special attention to the two key problems, optimization method of form selection of structural section of the tunnel as well as the stability and bearing capacity of the support structures, in the design of the long and large tunnel on high - class highway, introduces the simplified complex - form optimum method in the structure optimization theory, discusses the optimum design model of lining section of highway tunnel with satisfying demands in building clearance, ventilation and load conditions, puts forward an optimization method of form selection of three different kinds of lining sectional forms ( i. e. single - center circle, three - center tabular circle and three - center sharp circle ), establishes a complete set of systematic optimum design the ory and method of long and large tunnel on high - class highway, develops the corresponding computer software used on the planned xuefeng mountain highway tunnel on shaoyang to huaihua expressway in hunan province for optimization of form selections of the structural sections, and obtains a series of relatively reasonable structural design parameters

    本文針對我國公路隧道多為大跨度、扁平、幾何形狀呈多樣化的特點，通過深入分析目前隧道支護結構設計中存在的各種問題，抓住高等級公路長大隧道設計中隧道結構斷面的優化選型及隧道支護結構的穩定性與承載能力兩個核心問題，引入結構優化理論中的簡易復合形優化方法，深入探討了滿足建築限界、通風條件、受力狀態約束等條件下公路隧道襯砌斷面優化設計模型，提出了三種襯砌斷面形狀（單心圓、坦三心圓和尖三心圓）的優化選型方法，建立起一套完善的高等級公路長大隧道的系統優化設計理論與方法，並開發出相應的計算機程序，用於擬建的上海至瑞麗國道主幹線湖南省邵陽至懷化高速公路雪峰山長大高速公路隧道的結構斷面優化選型，得出了一系列較為合理的支護結構設計參數。
  2. In view of the problems in the design of the large andmedium - sized indoor substations built by guangzhou power bureau in recent years, points for attention in the design of indoor substations are expounded in terms of ventilation, cable channel, reservation of hangers and space for transportation and installation, ground wire, lighting for the whole substation, etc

    僅僅推力頭軸、孔存在間隙時，推力頭其它零件製造質量與安裝質量達到設計要求，是不會影響精確徑向定位的.爾王莊泵站9機組出現的環鍵與平鍵斷裂情況，可能不是由軸、孔間隙過大引起，而是其它尚未查明的原因
  3. Kemeida ventilation equipment co., ltd, is a large - scale factory specializing in design adn manufacture of environment - friendly ventilation and cooling equipment. besides product marketing, we also provide design adn installation services for whole - factory ventilation and cooling projects

    科美達通風設備有限公司是專業設計、生產環保通風、降溫設備為主，集產品銷售和為客戶提供通風降溫規劃設計及安裝的較大規模的廠家。
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