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A brief introduction is given to existing track\|laying machine unit for jointless track of foreign countries, and a description is given on several aspects needing consideration in developing cross section jointless track\|laying machine unit over high speed railway.

简要介绍国内外现有无缝线路铺轨机组现状 ,重点阐述进行高速铁路跨区间无缝线路铺轨机组研制应注意的几个方

It is a key technology for the construction of the high speed railway to lay down the disposable jointless track across sections, which can not only improve the laying precision of the rail, but also accelerate the advancement of the whole construction technology.

一次铺设跨区间无缝线路成组技术是高速铁路建设的一项十分重要的关键技术,它不仅提高了轨道的铺设精度,还促进了整个线路施工技术的进步。

By the actual construction of in patient department of Taiyuan Iron & Steel centre hospital construction craft of carrying out line tracing every two rooms is put forwards.

通过太铁中心医院住院大楼“扇形”楼的施工 ,并根据该楼建筑平面设计为扇形这一特点 ,提出用描线板对弧形建筑实施跨间描线配合放线 ,是目前曲面弧形建筑物施测的一种工

Selection method of time span during numerical simulation of optical pulse pro pagation in fiber is presented.

提出了利用分步傅里叶方法计算光脉冲在光纤中传输时间跨度的选取方法 ,给出了正确模拟光脉冲通过不同长度的光纤后光脉冲的变化所要选取的最短的时间跨度 ,即计算过程中所取的积分上下限之差。

With different time span including day,week,this paper selects six kinds of index returns month,which come from Shanghai Stock Exchang Composite Index and Shenzhen Stock Exchange Component Index.

以上证指数和深成指的3种不同时间跨度的收益率序列——日收益率、周收益、月收益率为研究对象,对比分析它们分布情况、厚尾性、ARCH效应以及自相关性等特征的变化。

However, the abuilding structure (especially large-span space building) is .

因此,如何高效、准确地对这些复杂结构体系进行内力分析已经成为社会大跨空间结构领域中亟待解决的问题。

The Construction Techniques for Paving Oversectior Seamless Track in Cold Area;

寒冷地区铺设跨区间无缝线路施工技术的研究

Passenger Transportation Special Line Cross Sector Seamless Line Essential Engineering Research;

客运专线跨区间无缝线路关键技术研究

On trans-sectional jointless track in upgrading construction for existing operating line

既有营业线上升级改造跨区间无缝线路施工

Construction Technology for New Continuity Laying of Inter-district Continuous Welded Rail

新线一次性铺设跨区间无缝线路施工技术

Constructional technology of laying a new rail link between cross-CWR

新建铁路干线一次铺设跨区间无缝线路技术

On the Spread of Real Symmetric Matrices with Entries in an Interval;

元素在某区间上的实对称矩阵谱跨度

A Discussion on Spatial Integration Mechanism of Crossing-boundaries Commercial Community in Urban Areas

大都市城区跨界商业社区空间整合机制探讨

intertrade and transregional economic zones

跨行业跨地区的经济区

The spatial difference in economic development level among the west regions and rapid development;

西部地区经济发展水平空间差异与跨越式发展

Locational Behavior and Spatial Influences of Multinational Corporation in Shanghai;

跨国公司在上海的区位行为及其空间影响

SEISMIC RESPONSE OF MONTANIC LONG-SPAN SUSPENSION BRIDGE CONSIDERING SPATICAL VARIATION

山区大跨悬索桥考虑空间变异性的地震响应

Trans-regional and inter-trade enterprises

跨地区、跨行业的企业

China does not recognise the boundary, and is already extracting gas from a field which straddles it.

而中方不承认这条中间线，并且已经开始在跨线地区开发油气资源。

As a result, buses still suffer significant delays due to traffic congestion in major inter-district traffic corridors.

结果，由于主要跨区交通走廊堵塞，巴士车程仍长时间受到阻延。

European Outline Convention on Transfrontier Cooperation between Territorial Communities or Authorities

关于领土社区或当局间跨越边界合作的欧洲纲要公约

Outline Convention on Transfrontier Cooperation between Territorial Communities or Authorities

关于领土社区或当局间跨越边界合作的(欧洲) 纲要公约

Convention on Transfrontier Cooperation between Territorial Communities or Authorities

关于领土社区或当局间跨越边界合作的 (欧洲纲要)公约

A Research on Spatial Structure of R&D in Asia-Pacific Region by Multinational Corporations:the Result from Factor Analysis by SPSS;

跨国公司亚太地区研发空间结构研究——兼谈中国在其中的地位