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At the same time, the evaluations of pavement performance with FWD are researched based on the backcalculation results. We also analyse the mathematical basic of the solvability conditions for inverse problems, the dynamic problems of pavement and the dynamic backcalculation of subgrade modulus of PFWD (Portable Falling Weight Deflectometer).

同时，采用模量反算结果进行了FWD评价路面性能的应用研究，分析了反问题有解存在的数学基础，探讨了路面动力分析问题，并对PFWD的路基模量动力反算问题进行了研究。

Three types of subgrade filling material are selected to analyze the change rule of subgrade resilience modulus under different compaction. Meanwhile PFWD（portable falling wei-ght deflectometer） is combined to integrate this parameter with compaction of construction control index,which brings about the conversion relation between three subgrade filling material and compaction. It can provide reference for pavement design and construction.

选定三种不同类型的路基填料，分析在不同压实度条件下路基回弹模量的变化规律，并结合PFWD检测方法，将设计参数回弹模量与施工控制指标压实度联系起来，得出三种路基填料的回弹模量与压实度的转换关系，可为路面设计与施工提供合理的依据。

This article describes that the contrast tests on the subgrade filled with natural sand-gravel was conducted with portable falling weight deflectometer and Benkelman beam,respectively,the correlation analysis on the modulus from the above tests was conducted and the empirical formula was obtained.

对填料为天然砂砾的路基用便携式落锤弯沉仪与贝克曼梁进行了对比试验，将便携式落锤弯沉仪所得模量与贝克曼梁弯沉进行相关分析，并得到经验公式。

Objective To develop a portable ventilation device to cool and dehumidify for the astronauts who work or move dressed in spacesuit in the atmospheric environment on the ground.

在地面大气环境下，对穿着航天服作业和移动的航天员进行便携式通风，以达到降温和除湿的目的。

The portable air conditioners also use the heat-exchange principle as the other air conditioners to cool and dehumidify the air.

便携式空调器还采用热交换原理为其他空调降温、除湿机。

And the diurnal variation of physiological characteristics of photosynthesis of Magnolia denudate under heavy metals stress were studied with the Li-6400 portable photosynthetic system.

为了解锑矿区土壤复合重金属污染对白玉兰光合生理特性的影响，分重度污染、轻度污染和无污染土壤栽培白玉兰苗木进行盆栽试验，并采用LI－6400光合测定系统对重金属胁迫处理的白玉兰进行了光合生理特性日变化研究。

A portable and visual simulated testing system is designed in order to solve the current problems of optoelectronic measuring in dynamic base about high cost, poor human-computer interaction and discommodious carrying.

此资料不能下载点击报告错误站长将实时更新！针对目前动基座光电测量仿真检测系统成本高、人机交互性差、携带不方便的问题

A portable and visual simulated testing system is designed in order to solve the current problems of optoelectronic measuring in dynamic base about high cost, poor human-computer interaction and discommodious carrying.

针对目前动基座光电测量仿真检测系统成本高、人机交互性差、携带不方便的问题

The antenna system includes a mechanism for electrically connecting the displaceable antenna to internal RF circuitry of the portable WCD when the displaceable antenna is in an extended position and for electrically isolating the displaceable antenna from the internal RF circuit when the displaceable antenna is in a retracted position within the casing.

该天线系统包括一个机构，用来在可移动天线处于拉伸位置时把可移动天线电连接至便携式WCD的内部RF电路，并在可移动天线处于外壳内的收缩位置时把可移动天线和便携式WCD的内部RF电路电隔离。

The data of the ionospheric critical frequencies, f0F2 and f0E, observed by a Digisonde Portable Sounder (DPS-4) at Zhongshan station of Antarctica in 1996, the hemispheric power index and the midnight equatorward boundary of the aurora estimated by the observation of American NOAA and DMSP satellites are used to examine features of the polar ionosphere.

本文利用1996年的电离层数字测高仪DPS-4所测的f0F2、f0E以及美国NOAA和DMSP卫星观测估算的半球功率指数和午夜极光区赤道侧边界纬度等资料，考察中山站电离层的极区特征。

And discuss some key point of integrated management system design, include hazard identification and risk assessment and risk control in the occupational health and safety management, the measure of satisfaction target of customer, the flawlessness of law system, the integration of the integrated management system and enterprise standardization system, unify lead institution and work orgnization, integreted internal audit and integrated management review.

同时，论述了一体化管理体系构建中的几个主要问题，包括职业健康安全管理中的危险源辨识、风险评价和风险控制、顾客满意度的科学监测、法律、法规体系的完善、一体化管理体系与企业标准化体系的有机结合、统一的领导机构和工作机构、一体化的内部审核和管理评审。

Deepwater Taranaki is investigated for its petroleum potential, using all available seismic data tied to shallow-water wells.

运用与浅水井相关的现有全部震波探测数据考察了深海区塔拉纳基盆地的油藏前景。