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safety
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  安全
    Research on Assessment Models of Maritime Traffic Safety and Simulation Applications
    海上交通安全评价模型及仿真应用的研究
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    Research on Fundamental Theory and Crucial Method of Freeway Safety Design
    高速公路安全设计基础理论及关键技术研究
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    Study on Marine Safety Evaluation
    海运安全评价研究
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    The Model and Application of Urban Traffic Emergency Management and Safety System
    城市交通紧急事件处理与安全系统模型及应用研究
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    Study on Performance and Safety Design of Fatigue and Fracture in Large-scale Railway Steel Welded Bridge
    大型铁路焊接钢桥疲劳断裂性能与安全设计
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  安全度
    THE INVESTIGATION OF THE RAILROAD LIVE LOAD STANDARD UPON THE SAFETY OF BRIDGE DESIGN
    铁路活载标准对桥梁设计安全度的探讨
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    A Study of the Method for Evaluation of the Degree of Safety
    关于交通安全度评价方法的探讨
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    The New Macroscope Method for Evaluating Traffic Degree of Safety
    评价交通安全度的一种宏观方法
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    Study about Simulation Analysis Method in Bearing Capactiy and Stability Safety of Railway Bridge
    运营铁路桥梁承载力和稳定安全度仿真分析方法的研究
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    Analysis on the degree of safety and durability for the structure of high-speed accommodation ring road for motor test
    汽车试验专用高速环形道路结构安全度和耐久性影响因素分析
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  “safety”译为未确定词的双语例句
    The Strength Properties And the Fatigue Safety Factor of Soil-Cement
    水泥稳定土的强度特性及疲劳安全系数
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    Designing the Safety Pillar for Surface Structures with Minicomputer PB-700
    应用PB—700计算机设计地面建筑物保护煤柱
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    An Estimation of the Random Fatigue Safety Life of the Truss-type Jibs on the Electric Wheel Crane
    电动轮胎起重机桁架式臂架的随机疲劳寿命预估
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    Based on the results of tests for high performance concrete mix ratio and erosion,the durability and life-span of the concrete in different parts are assessed to ensure the safety of the bridge.
    为保证润扬大桥混凝土耐久性要求,进行了混凝土耐久性以及寿命评估研究,通过对高性能混凝土配合比的研究,根据不同部位混凝土的具体特点,对大桥混凝土的寿命和耐久性进行了系统的分析预测;
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    the base of interaction mode is the safety operating speed obtained from driver-vehicle-road combined virtual simulation.
    互动模式仿真评价方法的基础是在人-车-路系统联合运行虚拟仿真条件下获得的驾驶人运行控制车速。
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  safety
A group of scientists conducted a comprehensive investigation on ecological safety and water and soil erosion in the Northwest Loess Plateau, Northwest China.
      
Therefore, the extension scale of converting cropland to forest could be enlarged properly in the reservoir area, while it should be limited in the non-reservoir area due to the issues of higher population density and food safety.
      
The infrared sensors around the robot improved its safety in avoiding barriers.
      
Frequent natural disasters and man-made catastrophes have threatened the safety of citizens and have attracted much more attention.
      
Disaster prevention, disaster reduction and disaster rescue are the important parts of national public safety.
      
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This paper presents the design and process of construction of a continuous prestressed concrete box girder railway bridge erected by incremental launched method with a steel truss as a launching nose. This is the first one of railway bridge in China to have employed this method of construction. Calculations of stresses are shown and process of construction has been well illustrated. From experience obtained through design and construction we observed: 1)This launching method of construction has certain advantages,...

This paper presents the design and process of construction of a continuous prestressed concrete box girder railway bridge erected by incremental launched method with a steel truss as a launching nose. This is the first one of railway bridge in China to have employed this method of construction. Calculations of stresses are shown and process of construction has been well illustrated. From experience obtained through design and construction we observed: 1)This launching method of construction has certain advantages, as it is easier to construct in the field, less equipments are required and no scaffolding is needed. It proves to be a more favourable construction method for prestressed girder of spans 30~60meters long. 2) Using this method to construct continuous prestressed concrete girders, special attentions must be paid to keep the bottom face of the girder sections in plane, and to maintain the desired elevations of the supporting points. In design it is necessary to have a certain factor of safety for the whole launching process. 3) To meet the requirements to push forward, the sliding base and sliding plate should be further improved. 4) By selecting a suitable site behind the abutment as casting yard,the casting and launching of girder sections can go on simultaneously, and as a result the advantages of the launching method would be more evident. 5) In order to utilize the equipments more efficiently it is better to install the jacking devices at different places, rather than to install them on the abutment only.

本文介绍了我国铁路上第一座采用顶推法施工的预应力混凝土箱形连续梁的设计和施工,顶推时使用了拆装式导梁。通过该桥的实践,作者认为:1)顶推法具有便于现场制造,设备简单,节省支架等独特的优点。对于跨度30~60米范围內的预应力混凝土梁来说,是较适宜的施工方法;2)采用顶推法施工应对梁底的平整度及控制支点标高特别加以注意,设计时应对整个顶推过程的检算保留适当的安全储备;3)作为使梁体在顶推过程中滑移的滑道、滑块应加以研究改进,使适应顶推的要求;4)在台后选择制梁场地,采取边灌筑梁体,边顶推的方案将更能充分发挥顶推法施工的优越性;5)对顶推设备以采用分散顶推较集中顶推为佳。

In applicotion of the theory of the elostic layer system to the flexible pavement design,several Key factors such as:selection of the design critera,determination of the locations of the critical stresses and comparsion of the contact condifions between stratum,determination of the allowable stresses and factor of safety,relatian between strcngth parameters and environmental conditions and so on must be taken into consideration.Process and suggestion for determining these factors are presedted in this...

In applicotion of the theory of the elostic layer system to the flexible pavement design,several Key factors such as:selection of the design critera,determination of the locations of the critical stresses and comparsion of the contact condifions between stratum,determination of the allowable stresses and factor of safety,relatian between strcngth parameters and environmental conditions and so on must be taken into consideration.Process and suggestion for determining these factors are presedted in this paper.

本文对弹性层状体系理论应用于柔性路面设计时应当注意的一些关键问题,例如设计指标的取舍、临界应力点的确定及层间接触条件的比较、许用应力值及安全系数的决定、强度参数与自然因素的关系等,提出了解决的方法和建议。

This paper presents a unified formula for calculating the strength of tunnel linings built of concrete or stone masonry, whether they are subjected to axial or eccentric compressive forces. Basing on the results of experimental and analytical researches at home and abroad,this paper proposes a formula for determining the influence coefficient of eccentricity (a=1-1.5(e_0/h)), introduces a concept of critical eccentricity-concerning compressive or crack resistance control and interpretes the difference in idea...

This paper presents a unified formula for calculating the strength of tunnel linings built of concrete or stone masonry, whether they are subjected to axial or eccentric compressive forces. Basing on the results of experimental and analytical researches at home and abroad,this paper proposes a formula for determining the influence coefficient of eccentricity (a=1-1.5(e_0/h)), introduces a concept of critical eccentricity-concerning compressive or crack resistance control and interpretes the difference in idea of the critical eccentricity formerly used to reflect whether the member is failed in compression or tention.The values of critical eeentricity are prepared under given factors of safety and grades of concrete, so the cal cula tion of tunnel linings may be more reasonably and simply than before.

本文对混凝土及石砌隧道衬砌的强度检算,建议采用不分轴心与大、小偏心受压的统一检算公式(N_P=KN=φαR_(?)bh),并根据国內外的试验成果和研究分析,定出偏心影响系数α的计算公式(α=1-1.5e_0/h)。还提出抗压和抗裂控制分界偏心的概念,说明它和拉、压破坏分界偏心在意义上的区別,算出了在一定安全系数和混凝土标号条件下的控制分界偏心数值,使衬砌强度检算方法较为合理和简化。

 
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