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A few robots cross in the unreal time of days , or they bump into furniture, or conk out after three-quarters of the way. In December 1990, after a decade of effort, graduate students at Carnegie Mellon University 's Field Robotics Center wired together a robot that slowly walked all the way across a courtyard.

有些机器人要么磨磨蹭蹭花上数天的时间，要么莽莽撞撞一头碰到家具上，要么刚走完四分之三就出了故障。1990年 12月，在经过了 10年的努力之后，卡耐基－梅隆大学&野地机器人学中心& [7]的研究生们终于组装出了一台机器人，并命名为&漫步者&。

A few robots cross in the unreal time of days , or they bump into furniture, or conk out after three-quarters of the way. In December 1990, after a decade of effort, graduate students at Carnegie Mellon University 's Field Robotics Center wired together a robot that slowly walked all the way across a courtyard.

有些机器人要么撞大运挪了一段，要么一头撞到家具上，要么走完四分之三就出了故障。1990年12月，努力了10年之后，卡耐基－梅隆大学&野地机器人学中心& [8]的研究生们终于组装出了一台机器人。

A few robots cross in the unreal time of days , or they bump into furniture, or conk out after three-quarters of the way. In December 1990, after a decade of effort, graduate students at Carnegie Mellon University 's Field Robotics Center wired together a robot that slowly walked all the way across a courtyard.

有些机器人要么撞大运挪了一段，要么一头撞到家具，要么走完四分之三就出故障。1990年12月，努力了10年之后，卡耐基－梅隆大学&野地机器人学中心& [7]的研究生们终于组装出了一台机器人。

The result showed that the strong storm followed by mesoscale squall line was primary cause of strong sandstorm producing, steps and ladders short wave trough of 500 hPa was great criterion triggering system for the mesoscale squall line producing, the essential dynamic condition was provided by distortion field and the mesoscale low pressure of 700 hPa for the strong sandstorm forming and maintaining in mid-west of Hexi Corridor, the deep vertical circulation development condition was basic power that urged squall line to occur and sand dust to curl up, which was provided for the deep convection development by superimposition of lifting movement before ground cold front and ascendant current of secondary circulation in upper air jet entrance region, temperature and the barometric gradient around the cold front was enlarged by enhancement of ground thermal low and temperature diurnalvariation of afternoon, by which essential thermal energy unstable condition was provided for the gale and strong sandstorm eruption, the strong sandstorm appeared in downstream of -200 m^2s^(-2) center of vertical helicity, the vertical helicity had good instruction significance for development of squall line and landing region of sandstorm, the mesoscale squall line occurred in unstable stratification, basic condition of potential energy transforming as kinetic energy was provided by strong unstable stratification for the strong sandstorm forming and developing.

结果表明：中尺度飑线所伴随的强风暴是产生强沙尘暴的主要原因；500 hPa阶梯短波槽是中尺度飑线产生的大尺度触发系统，河西走廊中西部700 hp变形场、中尺度低压为强沙尘暴形成和维持提供了必要的动力条件；地面冷锋前上升运动与高空急流入口区次级环流的上升气流的叠加，为深对流发展提供了深厚的垂直环流发展条件，是促使飑线发生和沙尘卷起的基本动力；地面热低压的加强和午后气温的日变化加大了冷锋前后的温度和气压梯度，为大风、强沙尘暴爆发提供了必要的热力不稳定条件；强沙尘暴出现在垂直螺旋度为－200平方公尺/s^2中心的下游，垂直螺旋度对飑线的发展和沙尘暴的落区具有较好的指示意义；中尺度飑线发生在不稳定层结内，较强的不稳定层结为强沙尘暴形成、发展提供了位能转化为动能的基本条件。

Zhangtianqu oilfield locates in the center of Yixia west slope, Ordos Basin. The field has a complex hydrocarbon-bearing bed set. On principle that lithology and reservoir can be identified, geologic parameters such as shale content, porosity, and oil saturation can be determined and be used to distinguish oil-bearing formation from water formation, as well as costeffectiveness, an improved logging interpretation model has been established. The model extends conventional single porosity interpretation methodology to identify various lithologies (such as coal seam, radioactive sandstone, carbonate rock besides sandstone and shale) by comprehensively analyzing the logging responses of sand reservoirs on economic logging set of acoustic logs and induction logs. Applications on real data show the improved model is superior in identifying complex lithology with conventional logging data.

张天渠油田位于鄂尔多斯盆地伊陕斜坡西部中段，该油田含油层系复杂，在岩性地质特征分析时，本着&能确定岩性，划分储层，提供泥质含量，孔隙度，含油饱和度等地质参数，区分油层，水层，以及经济适用&的原则，选用经济适用的声感组合测井系列，通过综合分析砂岩储层的测井响应特征，对传统单孔隙度解释方法进行改进，增加识别多种岩性成份(除砂岩，泥岩外，局部含有煤岩，放射性砂岩，碳酸盐岩等复杂岩性)的功能，建立了适合该油田的测井解释模型，提高了利用常规测井资料识别复杂岩性的能力和测井参数的解释精度，为油田勘探开发提供依据。

I had never seen or eaten a lingcod before visiting its habitat near this coastal fishing town in south central Alaska, where I joined ecologist Mary Anne Bishop and researcher Brad Reynolds, both of the Prince William Sound Science Center in Cordova, on a field trip to monitor lingcod movements by tracking acoustic transmitters implanted in the fish.

在到达蛇鳕靠近南阿拉斯加一个捕鱼小镇的栖息地之前，我从未见过或吃过它。在这里我与两位来自科尔多瓦威廉王子湾科学中心的科学家合作——生态学家玛丽·安·比肖普和研究员布拉德·雷诺兹，实地考察并用植入于蛇鳕身体内的声音传送装置监测它的行为。

Because the Earth the planetary system center of the place the sun, under the domination of "too very" energy field produce by its fixed star.

由于地球所处的行星系中心太阳，在其恒星所产生的&太极&能量场的支配之下。

The principle of railroad trackbed inspection with GPR mounted on track vehicle is introduced. In line with requirements of exploring depth, accuracy and speed in the process of field survey, the layout of GPR survey line is put forward, the center frequency of antenna, the maximum time window, the temporal sampling interval and the space between traces are calculated according to the theoretical formulas.

介绍了使用路检车装载探地雷达对铁路路基检测的原理，结合野外探测过程中对测量深度、精度和行车速度的要求，给出了GPR现场工作测线布置的原则，理论上给出天线中心频率、时窗、采样率、测量点距的计算公式。

At the center of the outreach effort is a new hot line that the connector is creating to field calls from those with questions about the law and how to sign up for the new plans.

医疗保险连接者在推广活动中心设立了一部热线电话，主要是解答各地关于法律的质疑和如何签订新计划的外地来电。

The Bioastronautics and Fundamental Space Biology Postdoctoral Research Program, managed by the DSLS, aims to provide two-year, mentored postdoctoral research opportunities in diverse areas of space life sciences at several field center, including human support technology program, biomedical research and countermeasures program, fundamental space biology program.

太空医学和基本空间生物学博士后研究计划是由DSLS发起，目的是提供两年的由导师指导的博士后在几个NASA领域中心开展的，涉及空间生命科学各个领域的研究机会，研究方向包括人类支持技术，生物医学研究和反措施，基本空间生物学计划。

Since historical times,England ,where the early inhabitants were Celts, has been conquered three times .

从有历史以来，英国，在此地早期居住的是凯尔特人，已经被征服了三次。

Bluetooth OBEX File Transfer Enables the sending and receiving of files on your phone via Bluetooth.

蓝牙OBEX文件移动允许经过蓝牙传送和接受文件。。。。