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So, it is a prominent and urgent problem to make certain selection of the tunnel headrooms insulation air-gap.

因此，如何选择隧道净空绝缘间隙是青藏铁路建设中急需解决的技术难题。

Research results:This paper puts the reliable and available scheme into the construction and some contact suspension problems of low headrooms tunnel were resolved.

研究目的：对遂渝线无砟轨道综合试验段中出现的低净空隧道的接触悬挂方式进行介绍和探讨。

Active front grille, with grille louvers that open when the fuel cell stack requires coolingFull underbody aerodynamic coverLeft- and right-hand charging ports incorporated in stylish front fender ventsFlush door handles that feature push-to-release operationWind tunnel-shaped outside mirrors with integral turn signalsCenter high-mounted rear stop lamp incorporated into full-width, wraparound spoiler Signature vertical taillamps with subtle fin designSide glass mounted flush with pillarsWheels with clear-covered space between the spokes, creating a sleeker profile while maintaining Cadillac's signature bold wheel designLow-drag roof rack

前格栅与主动，开放时，燃料电池堆格栅百叶，需要coolingFull底部的空气动力学coverLeft和右手收费港口时尚大门前面的挡泥板ventsFlush纳入句柄功能一键释放operationWind隧道形外后视镜带有整体式转signalsCenter高置后刹车灯全面宽度，重叠扰流签名微妙的鱼翅designSide玻璃垂直尾灯内安装有明确的覆盖轮辐之间的空间pillarsWheels刷新，创造了光亮的表面，同时保持凯迪拉克的签名大胆的轮designLow拖动屋顶机架

The measurement results show that the general characteristics of the present crustal stress field of the project area are as follows: the horizontal principal stress is the maximum principal stress, and the preferred orientation of the maximum horizontal principal stress is NW-WNW, the maximum principal stress of surrounding rocks of the plant buildings and high-pressure branch tunnel area is generally 14.5±0.5 MPa and the minimum principal stress is 9±0.5 MPa; the dead oad-bearing capacity of surrounding rocks is 10—14 MPa; and the surrounding rocks are essentially impermeable at high pressures of 8—10 MPa.

测量结果表明，工程区现今地壳应力场的总体特征为：水平主应力为最大主应力，最大水平主应力的优势方向为NW-NWW向；厂房和高压岔管区围岩的最大主应力值一般为14.5±0.5MPa，最小主应力值一般为9±0.5MPa；围岩自身的抗载强度一般为10～14MPa；在8～10MPa高压力作用下围岩基本不透水。

The use of ground penetrating radar has become widespread in highway tunnel inspection with the development of highway engineering.

随着我国公路工程的发展，地质雷达在公路隧道健康状态检测中获得了广泛的应用。

The evaporative experiments of water and porous structural materials were carried out in a hot-humid climatic wind tunnel laboratory,with typical hourly changing climatic conditions simulating in Guangzhou in summer.

为在建筑以及环境中成功运用这项技术，准确地评价地区气候条件下多孔材料所能提供的蒸发降温的水平是十分重要的。

Hot-humid climatic wind tunnel paper introduced can simulate above natural climate environmental elements according to the variant velocity of flow and simulated solar radiant intensity regulation.

介绍的动态热湿气候动态风洞实验台，在传统风洞风速模拟与控制实验技术基础之上，通过增加太阳辐射模拟和空气温湿度控制，初步实现了对室外自然气候中太阳辐射、风速及温、湿度环境的模拟控制。

Hot-humid climatic wind tunnel the paper introduced can simulate natural climate environmental elements namely solar radiation、air velocity、air temperature and humidity, according to the variant velocity of flow and regulation of infrared light, humidifier, heating and cooling facility.

热湿气候动态风洞实验台在具有可调低速风外，还通过设置红外灯、加热与制冷、加湿与除湿装置，初步实现了对室外自然气候要素太阳辐射、风速及温、湿度环境的模拟控制。

The obtained results were compared to data of testing the same model in a hot-shot wind-tunnel IT-302M at M_∞≈6 and 8,τ=100～120ms,Re_(1∞)=(1.3～1.8)×10~6,with boundary layer tripping on the surfaces of the inlet ramp and side compression wedges.

所获数据与同一模型在热射流风洞IT-302M实验马赫数M∞≈6，8，运行时间τ=100~120ms，雷诺数范围Re1∞=(1.3~1.8×106，进气道压缩面和侧压缩面进行了边界层转捩。

After the icer, the doughnuts pass through the cooling tunnel , a refrigerated , enclosed area where the chocolate hardens rapidly.

后icer ，炸面圈通过冷却隧道，冷藏，密封的地方巧克力变硬迅速。

Nowadays, most of research are to build a transmutative Petri Nets through adding controlling place sets, controlling arc sets and controlling policy to the basic Petri Nets, while the Controlled Petri Nets could be used to argue many controlling theory problems conveniently and to induce many logically and physically supervisory and solve the Event Feedback Controlling Problems and State Feedback Controlling Problem in DEDS supervisory theory.

目前大多数的研究表现为在变形后的受控Petri网基础上，利用各种方法求得各种逻辑型、结构型控制器，解决DEDS监控理论中的事件反馈控制问题与状态反馈控制问题。

On one hand, there are discussions with the works council and union about extension of short time working up to the end of September.

一方面，有讨论，工程理事会和联盟关于延长工作时间短至9月底。