【摘 要】
：
在英国东部沿海地区的亨北河上,新近建成了一座世界上最长的吊桥,也是世界上跨度最大的桥梁。它连接亨北河南北两岸的赫塞尔和巴顿两个城市,使路程缩短了80多公里。亨北桥主
论文部分内容阅读
在英国东部沿海地区的亨北河上,新近建成了一座世界上最长的吊桥,也是世界上跨度最大的桥梁。它连接亨北河南北两岸的赫塞尔和巴顿两个城市,使路程缩短了80多公里。亨北桥主跨1410米,南北两侧的边跨分别为280米和530米。大桥拥有复式双车道、人行道和自行车道,可以通过180吨特种载重汽车。该桥的两座塔,改变过去采用钢塔的传统,采
On the River North, on the eastern coast of England, the longest suspension bridge in the world and the largest bridge in the world have recently been built. It connects the cities of Hesel and Paton on both sides of the north and south of the Hengbei River, shortening the distance by more than 80 kilometers. Hengbei Bridge main span of 1410 meters, north and south sides of the span of 280 meters and 530 meters respectively. The bridge has duplex double lane, sidewalks and bike lanes, can pass 180 tons of special truck. The two towers of the bridge, change the past, the traditional use of steel towers, mining
其他文献
The extensive use of stiffened shells in aerospace industries is mainly motivated by the high stiffness-to-weight and strength-to-weight ratios.For these th
Symmetry is a very meaningful property for structure design owing to the convenience in theoretical analysis, numerical computation and manufacturability, a
风险投资的原理,在于通过市场规则,分解科技成果从最初的构想到市场化过程中不同阶段的风险和收益。风险投资收益的实现,在于借助成熟而完善的资本市场,通过企业购并或者上
Reliability evaluation of critical systems such as solid rocket motors is generally a difficult and costly task in terms of the real testing.In this case, n
卢卡奇的“物化理论”在两种意义上是对“现代性”的批判,一是“现代性”意味着现代世界的实质、根据,它的外延远远大于资本主义的外延,因此,对资本主义现代社会的物化批判理
内在主义的基础主义保留了经验具有辩护作用,且可以作为辩护起点的健康直觉,但是面临着塞拉斯两难的困境.现象保守主义试图以显像的现象性质来摆脱困境,但是这一想法遭到了盖
物权法指的是明辨财产归属、物权利用的法律条文,具有很强的严格性、绝对性,还有强制性特点.物权法中的所有权制度关乎集体和个人财产的根本权益,其在立法上更应该持严谨和谨
In this paper, topology optimization method is employed to improve thermal insulation and stiffness performances of coupled thermoelastic structure.The stru
CWDM(Coarse Wavelength Division Multiplexing)系统,即稀疏波分复用系统,或称粗波分复用技术,作为一种经济实用的短距离WDM传输系统,在城域网应用中越来越受到大家的认可
作为长期研究政治哲学和伦理学的学者,包利民教授的《至善与时间》用强者—弱者政治学的模型对现代性公共伦理进行了分析,在古—今、中—西、启示—理性的视野转换中带领读者