Ice radar\'s technical development in polar ice sheets investigation was reviewed through three periods;the early ice radar systems(1960s—1980s),the second generation ice radar systems(1980s—2000) and the newest ice radar systems(after 2000).
分三个阶段,即早期冰雷达系统(20世纪60至80年代)、第二代冰雷达系统(20世纪80年代至2000年)和新冰雷达系统(2000年之后),综述了极地冰盖冰雷达探测技术的发展。
The Passenger Information System (PIS) has now been introduced more and more in the urban rail constructions as a independent system to improve operation effi ciency and service level,along with the development of Urban Rail Transit.
本文对PIS系统做了简单的总结,并对其发展进行了展望。
PIS (Passenger Information System) system is a system related to Multi-disciplinary, multi-system and multi-manufacturer,due to it has numerous sub-system and jumbled data category, it needs to use data warehouse technology to pre-analyze and process a great quantity of data caused by every sub-system, so that the data storage is increased and the efficiency of enquiry is improved.
做为涉及多专业、多系统、多厂家的PIS系统,由于子系统繁多、数据类别庞杂,因此需要利用数据仓库技术对各子系统产生的大量数据提前进行分析处理,以提高数据的存储和查询效率。
The design principal, basic structure, main fuction and technolegy characteristics of the PIS software were reported.
为了使照相影像微结构分析仪各装置之间能协调一致地完成指定的操作 ,并进行各种数据处理 ,特在微型计算机上开发出一套专用系统软件 ,简称PIS软件 。
A REVIEW OF ICE RADAR'S TECHNICAL DEVELOPMENT IN POLAR ICE SHEET INVESTIGATION
极地冰盖冰雷达探测技术的发展综述
The North Pole rests at the top of big shifting sheets of polar ice,
北极坐落在移动的极地冰盖上，
The in situ measurement techniques of surface mass balance in Antarctica ice sheet
南极冰盖表面物质平衡实地测量技术
The land in the north is iced over and polar bears live there.
北部的土地由冰雪覆盖，北极熊在那里生活。
The ice itself is moving so quickly,
冰盖移动的速度极快，
Mars has a north pole and a South pole covered with white frost.
火星有冰霜覆盖着的南极和北极。
TURBULENT PARAMETERS OF THE NEAR SURFACE LAYER OVER THE ICE SHEET NEARBY ZHONGSHAN STATION,EAST ANTARCTICA
南极中山站附近冰盖近地面层湍流参数的观测研究
ice covered waters surrounding the North Pole; mostly covered with solid ice or with ice floes and icebergs.
围绕北极的冰雪覆盖的水域；几乎全被大冰块或冰山覆盖。
The polar bear is one example of an animal that could become extinct by the end of this century. the WWF said.
世界自然基金会有关人士说：“北极冰盖融化可能会导致北极熊等极地动物在本世纪末灭绝。”
Ice sheets are broad glaciers that blanket whole regions.
冰盖则是能把整个地区覆盖起来的广阔冰川。
Progress and Prospect of Ice Radar in Investigating and Researching Antarctic Ice Sheet
冰雷达探测研究南极冰盖的进展与展望
Detecting Arctic Snow and Ice Cover with FY-1D Global Data;
利用FY-1D全球数据监测北极冰雪覆盖
THE IN-SITU MEASUREMENT TECHNIQUES OF SURFACE MASS BALANCE IN ANTARCTIC ICE SHEET
南极冰盖表面物质平衡实测技术综述
ANTARCTIC ICE MASS LOSS FROM GRAVITY SATELLITE
卫星重力用于南极冰盖物质消融评估
It showed that Mars' polar ice caps are made of frozen water, not frozen carbon dioxide as previously thought.
这表明火星极点冰盖是水冰，而不是先前认为的干冰。
Like Antarctica, the Arctic is a land of ice and snow.
如同南极洲，北极是一个冰雪覆盖的大陆。
The colder South Pole s its atop the massive, frozen continent of Antarctica.
更冷的南极则座落于辽阔的冰雪覆盖的南极洲。
We don' t know much about the appearance of the surface of Antarctica, since it is covered with ice more than two miles thick in some places.
我们对南极洲的地面形状了解不多，因为在这个洲有些地面覆盖着两英里多厚的冰层。