通过测量一束头发上较重的氢和氧同位素的比例，科学家可以构建一个地理时间轴。
By measuring the proportion of heavier hydrogen and oxygen isotopes along a strand of hair, scientists can construct a geographic timeline.
科学家称这种标志物为“替代品”，代表他们真正想要测量的东西——在本例中，即在过去冰的地理范围。
Scientists call such markers "proxies" for the thing they actually want to measure — in this case, the geographic extent of the ice in the past.
参考国家地理月球测量结果。
下面的演示，可以很好地演示上面两种地理信息获取技术的不同，可以看到，他们在测量用户地理位置方面有很多不同。
As you can see, there can be quite a difference in measuring the visitor's location. The extent of the difference is shown in the following demo.
要从现在的提供静态测量数据和资料转变到实时提供现势地理信息。
Provide static measurements from the current data and information are powerful transition to real-time geographic information.
分组抽样，即测量随机的家庭“组”，一般用于不均匀地分散在较大面积地理区域的人群。
Cluster sampling, in which random "clusters" of households are measured, is used in populations that are not in even or structured Settings but are spread unevenly over a large geographic area.
地理数据的收集，分析，测量和存储方法。
Method for collection, analysis, measurement and storage of geographical data.
卫星图像和地理信息系统也用于城市热岛研究除了利用领域的测量方法。
Satellite images and geographical information system are also used for UHI study besides using field measurement method.
介绍了利用钢卷尺和量角器等简单工具测量地理纬度的方法。
This article introduces the methods of measuring geography latitude with the single tools, such as steel tape measure, protractor.
测量纬度，是同学们发挥空间想象力，运用所学的天文地理，平面几何和三角函数知识来解决问题的一次演练。
Measuring latitude creates the opportunity to truely use problem solving skills, utilize students'spatial imagination and knowledge from astronomy, geography, geometry and trigonometry.
再者，这个压缩方法可以看成是测量多样风景和地理特征的新方法。
Moreover, the compression technique can be seen as a new method of measuring the diverse landscapes and geographical features.
《测量学》是测绘科学、地理信息科学和土木建筑类专业的一门专业基础课，在课程体系中具有重要地位。
As a basic subject from science of geodesy and geomatics, science of geographical information, architecture, and so on, the Surveying science plays an important role.
方位，相对位置：方向，尤指用地理学的或天体图线测量的从一个固定位置到另一个位置的带有角度的方向。
Direction, especially angular direction measured from one position to another using geographical or celestial reference lines.
相似的模式在全美都存在。通过测量一缕头发中较重的氢氧同位素的比例，科学家们可以构建一个地理学的时间轴。
Similar patterns exist throughout the U. S. By measuring the proportion of heavier hydrogen and oxygen isotopes along a strand of hair, scientists can construct a geographic timeline.
项目类型主要涉及控制测量、地形测量、线路测量、变形测量及地理信息系统等测量成果。
Primarily concerned with controlling the measurement of project types, topography, line measurement, deformation measurement and geographical information system measurement of results.
这些讨论对于建立地理信息系统的测量数据库是有益的。
Thesediscussion are valuable for the establishment of the geodetic data base in GIS.
1959年，我在渥太华的一家私营的航空测量公司工作，这是一家高科技公司，当时我还是一位年轻的地理学者。
I was a young geographer in an aerial survey company in the private sector in Ottawa in 1959. It was a high-tech company.
地理信息系统(GIS)是计算机科学、地理学、测量学、地图学等多门学科综合的技术。
GIS (geography information system) is a kind of technology, which combines computer science, geography, measuring science and mapping science.
确定这位男孩不是当地人之后，科学家通过英格兰地理调查中心（BGS）测量他牙齿中氧元素和锶的不同形态。
To determine that the teen wasn't a local, scientists from the British Geological Survey (BGS) measured different forms of the elements oxygen and strontium in his teeth.
概述了大地测量学作为测绘基准提供地理信息系统的基础框架作用。
The role of geodesy, as the datum of surveying and mapping, for providing the fundamental frame of GIS is briefly discussed.
基于遥感数据的三维重建技术是当前数字摄影测量、遥感和地理信息系统等领域的重要研究方向。
The research on 3d reconstruction based on remote sensing data has become one of the focuses in the field of Digital Photogrammetry, remote sensing and Geographic Information System.
通过测量一缕头发中较重的氢氧同位素的比例，科学家们可以构建一个地理学的时间轴。
S. By measuring the proportion of heavier hydrogen and oxygen isotopes along a strand of hair, scientists can construct a geographic timeline.
同时，测量点的具体地理位置也自动地存入了计算机内。
The position is checked and stored in the computer automatically.
利用了一种管道地理位置测量的有效方法，即GPS/INS组合导航系统，对组合导航系统的实验数据进行了分析。
The experiment data of GPS/INS integrated navigation system as well as main error source of inertial parts has been analyzed.
震级是一种测量震源的方法，并且和个人的地理位置，震感无关。里克特震级测量是能观测到的最大震幅。
It is a measure of the size of the earthquake source and is the same number no matter where you are or what the shaking feels like.
三维地形虚拟现实技术是当前计算机图形学、地理信息系统和数字摄影测量技术研究的热点问题。
The study on 3 D Terrain VR is a hot topic in Computer Graphic, Geographic Information System and Digital Photogrammetry.
这些讨论对于建立地理信息系统的测量数据库是有益的。
Thesediscussion are valuable for the establishment of the geodetic data b...
这些讨论对于建立地理信息系统的测量数据库是有益的。
Thesediscussion are valuable for the establishment of the geodetic dat…
这些讨论对于建立地理信息系统的测量数据库是有益的。
Thesediscussion are valuable for the establishment of the geodetic dat…
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