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等级道路
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  level road
     Several Roadbed Handling Measures in Construetion of High Level Road on Hilly Land
     丘陵区修建高等级道路的几种路基处理措施
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     Combined with the engineering practice on SMA road and wide application in high level road engineering for SMA asphalt mixture the design of mixed ratio for SMA mixture and main point technically of consturction are discussed in the paper.
     SMA混合料在高等级道路工程中广泛应用 ,结合SMA路面工程实践 ,本文对SMA混合料配合比设计与施工技术要点两个方面进行分析阐述 .
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  “等级道路”译为未确定词的双语例句
     Aging behavior of two Liaoshu paving asphalts , AH-70 and AH-90 conforming to Q/SHR004-1998 standard were studied.
     研究了符合Q/SHR0 0 4- 1998标准高等级道路沥青AH - 70、AH - 90的老化行为。
短句来源
     The experimental results show that Liao-shu 1~# and 2~# asphalts have preferably temperature sensitivity compared with other country company and accord with the Q/SHR003-1998 and Q/SHR004-1998 standards.
     实验结果表明,辽曙一区原油研制的1号和2号高等级道路沥青的PI值、当量软化点和当量脆点符合中国石油化工集团公司Q/SHR003-1998和Q/SHR004-1998标准,与国外一些公司的标准相比,具有较好的感温性。
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     Research on Application of Waste Rubber Powder in High-Type Road
     废胶粉在高等级道路上的应用研究——废胶粉沥青混凝土的高温稳定性
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     The total road asphalt production in China was 2 800 kt/a in 1999, in which the high grade road asphalt accounted for 54.6%.
     1999年我国道路沥青产量为 2 80 0kt/a ,其中高等级道路沥青占 5 4.6 %。
短句来源
     Aging resistance asphalt was developed by research on ductility and penetration ratio of different crude oil and processing technology. Its penetration retained after TFOT was greater than 70%, and its 15℃ ductility after TFOT was greater than 100cm.
     通过不同油种、不同组合工艺的沥青产品TFOT后15℃延度与沥青针入度之比及 钟入度比的考察,对沥青原料的油种进行选择,对加工工艺进行优化,研制开发了针入度比大 于70%、TFOT后15℃延度大于100 cm的耐老化型高等级道路用AH-70沥青产品。
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  相似匹配句对
     GRADING DESIGN OF CITY GRADE SEPARATIONS HUB
     城市道路立体交叉等级设计
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     Discussion on Ranking Traffic Accidents
     道路交通事故等级划分的探讨
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     strategic way ;
     战略道路 ;
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     Road Heating
     道路供热
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     THE DEFINITION OF NATURAL DISASTER AND DISASTER GRADE SCALE
     自然灾害的概念、等级
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  level road
When the subjects worked at their own pace, walking on a level road or climbing stairs with load weights equal to 10% and 40% of body weight, they compensated for the heavier load by decreasing walking speed or climbing rate.
      
However, other than providing a high level road map on the path to SOA these types of models do little else.
      
In this paper we have compared different classification techniques for low-level road extraction.
      
Minimal power is needed to maintain a vehicle's speed while cruising on a level road.
      
Our purpose is to obtain 1/25,000 level road data from PRISM image.
      
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This paper put forward a method for choosing optimal layer thickness of flexible pavement. In the optimization model, the unit area cost of pavement is (?)s the objective function, the factors of deflection, flexural tensile stress, shearing stress, frost-ressting depth, rain arid max layer thicknesses are the eonstraint condition, The optimal layer thickness can be determined by the improved solving optimization model of increment search method. The calculated results of pavement permanent deflections are regarded...

This paper put forward a method for choosing optimal layer thickness of flexible pavement. In the optimization model, the unit area cost of pavement is (?)s the objective function, the factors of deflection, flexural tensile stress, shearing stress, frost-ressting depth, rain arid max layer thicknesses are the eonstraint condition, The optimal layer thickness can be determined by the improved solving optimization model of increment search method. The calculated results of pavement permanent deflections are regarded as a vice-system to check up theoptimization designs. In the multiple layered pavement structure, the stress, strain and displacement can be directly computed by the MALES mechanical analysis program of multiplt elastic system. The optimization program OTDEP has been developed and come into use as pavement thickness design. The typpical example computation shows that the method is feasible. and it is valuable for high-type flexible pavement design.

本文提出了一种选择多层柔性路面最佳层厚的方法。优化模型中,以路面单位面积的造价为目标函数,弯沉、弯拉应力、剪应力、抗冻深度、最小及最大层厚为约束条件。利用改进的增量搜索法求解优化模型,得出最优层厚。路面永久变形的计算作为副体系,检查优化设计的结果。多层路面结构中应力、应变和位移可利用多层弹性体系力学分析程序MALES直接计算。编制了路面厚度设计最优化程序OTDFP。示例计算表明本方法是可行的,对高等级道路柔性路面的设计具有参考意义。

In bridges and other structures, there are several forms of skew girders, one of which is simply-supported skew girder, with equal or unegual skew angles at two supports. In this paper, the irregular simply-supported skew girder is analysed and the calculation formulae of influence lines and internal forces commonly occurred under loading are derived according to the torsional theory. And then, in order to understand the hehaviour of this kind of skew girder, several skew girders are analysed and studied.

在高等级道路的桥梁结构及其它结构中除常遇到平面形状为平行四边形的规则斜梁外,还会遇到其它乎面形状的斜梁,它们的区别主要在于梁的两端斜交角的不同,从而导致了受力性能的差异。本文根据梁的扭转理论导出了平面形状为任意梯形的斜交简支梁在常见荷载作用下影响线计算和内力计算公式。同时,文中还对几种有代表性的特殊斜梁进行了分析和讨论,以使对各种类型斜梁承载性能有所了解。

In this paper a state-space model is proposed for a transportation-road system. In the model investment, pavement distress and transportation capacity are selected as the decision variable, the state variable and the output variable, respectively. With the model and the discussions on predictions of transportation capacity and transportation demand, a transportation tracking problem is formulated and the corresponding model is given. Two sorts of algorithms of the transportation tracking model are derived and...

In this paper a state-space model is proposed for a transportation-road system. In the model investment, pavement distress and transportation capacity are selected as the decision variable, the state variable and the output variable, respectively. With the model and the discussions on predictions of transportation capacity and transportation demand, a transportation tracking problem is formulated and the corresponding model is given. Two sorts of algorithms of the transportation tracking model are derived and their applications are discussed. A case study is presented to show how to deal with practical details. In the end-several important problems unsolved are pointed out.

本文中把一个地区或国家内所有道路的全体、称为该地区或国家的运输道路系统,而把道路等级和不同等级道路的多少称为系统的路况。基于投资决定路况、路况决定运力这一事实,以投资、路况和运力分别为控制变量、状态变量和输出变量,建立了道路系统的状态空间模型。以这个模型为基础,考虑到需求决定投资,在讨论了运输需求预测之后,阐述了运输跟踪控制问题并给出了相应的跟踪控制模型,该模型既可用于实时决策与控制,也可用于制定交通规划。文中导出了跟踪控制模型两种用途的递推优化算法,结合实例说明了算法使用中有关细节问题的处理,最后指出了有待进一步研究的问题。

 
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