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The factors available to hail formation and development, as the climatic, the synoptic and local circulation characteristics and local factors in northwest China are summarized. The recent achievements in hail research by the radar, satellite, lighting gauge and modeling are summed up. Some key scientific problems needed to be urgently solved and research methods needed to be further developed are pointed out.Keywords : Hail research Climatic and synoptic circulation characteristics Northwest China.

归纳了西北冰雹的天气特征、气候规律，概括了产生冰雹天气的环流形势和诱发冰雹天气的局地因素，综合分析了雷达观测、卫星观测、闪电定位和数值模拟等手段在西北地区冰雹研究领域的新进展，最后指出了西北冰雹研究领域急需解决的科学问题和需要进一步发展的研究手段。

Northwest Normal University, Northwest University of Nationalities is NT teachers and minority education and training centre.

西北师范大学、西北民族大学是西北地区师资和少数民族教育培训中心。

Using the data of 171 observations from 1961 to 2003 in Northwest China, the paper analyzes the impact of precipitation resources vacillation on agriculture in Northwest China.

选取西北地区资料年代较长的171个地面测站1961～2003年历年降水量，深入研究了西北地区降水资源变化特征及其对农业生产的影响。

Coal-bearing seams in Shenyu mine area inclines northwest, the bedrock thickness on the coal seams increases northwest, and there are generally red soil water-resisting layer on the bedrock. To study on the coal-water friendly geological conditions for the water-resisting layer during the coal mining process, and to determine mining zones without causing obvious water table decline are an important approach to the water-conserving mining in the fragile ecological mine area of North Shaanxi.

榆神矿区含煤地层整体向北西倾斜，煤层上覆基岩厚度向北西方向增大，基岩之上普遍分布有红土隔水层，深入研究煤炭开采过程中不对含水层造成破坏的煤水共生地质条件，确定既可采煤、又可实现水位不明显下降的区域，是陕北生态脆弱矿区保水开采的重要途径。

Northwest weak basis for urban development, economic small volume, which for foreign investment in the property market has emerged in the Northwest High.

西北城市发展基础薄弱、经济总量小，这种连续的外来投资已经使西北楼市出现了虚高的趋势。

The northwest of China lies a wheat belt, which covers several square km. It shares the same border at its northwest with the dry Loess Plateau and gobi, which is a hostile place for human to live.

在中国西北部，有一片数百平方公里的产麦区，产麦区边缘的西北部是干旱的黄土高原和戈壁沙漠。

According to hydrochemistry monitoring material of northwest rivers in recent five years,and compared with the first northwest rivers water resources investigation appraisal result in 80's of last century,we analyzed the main rivers hydrochemistry condition,runoff degree of minerali...

根据近5 a来对西北诸河的水化学监测资料，统计出了主要河流水化学状况；分析了河川径流矿化度、总硬度和水化学类型的地区分布，并与20世纪80年代第一次西北诸河水资源调查评价的结果进行了比较。

According to hydrochemistry monitoring material of northwest rivers in recent five years, and compared with the first northwest rivers water resources investigation appraisal result in 80's of last century, we analyzed the main rivers hydrochemistry condition, runoff degree of mineralization, total hardness and the hydrochemistry type distribution.

根据近5a来对西北诸河的水化学监测资料，统计出了主要河流水化学状况；分析了河川径流矿化度、总硬度和水化学类型的地区分布，并与20世纪80年代第一次西北诸河水资源调查评价的结果进行了比较。

The major deposits in the Sanzhou ore field are related to Yanshanian or later tectonic activity,which is divisible into six sequences represented by:1the Upper Triassic-Lower Jurassic low-angle normal slip fault and associated structures near or immediately occurring on the unconformity between the Lower Carboniferous and the Upper Triassic;2the longitudinally bucking fold in Devonian-Carboniferous and Upper Triassic-Lower Jurassic strata;3the earlier phase thrusts toward northwest;4the transcurrent fault toward northeast;5the later phase thrusts toward northwest;and 6the extensional normal slip minor faults.

彭少梅 ，杨坤光，姚淑梅三洲矿田内主要矿床与燕山期或更晚的构造活动有关。燕山期构造活动可分为六个序列：1下石炭统与上三叠统不整合面附近和不整合面之上的上三叠统―下侏罗统中的低角度正滑断层及伴生构造，2泥盆系―石炭系及上三叠统―下侏罗统中的纵弯褶皱，3北西向逆冲断层，4北东向平移断层，5第二次北西向逆冲断层，6伸展性正滑小断层。

The first quake with a magnitude of 7.8 struck 183 miles (294 kilometers) northwest of the Vanuatu island of Santo and 354 miles (596 kilometers) northwest of the capital of Port Vila at a depth of 21 miles (35 kilometers).

与第一次地震为7.8级，发生一百八十三英里（294公里）的西北瓦努阿图桑托岛，三五四英里（596公里）西北方的首都维拉港在21英里（35公里深度）。

I can't say anything hurtful about anyone.

我不能说任何伤害人左右。

She was a short fat woman , garbed in a very tight , very gaudy red dress .

大冬天的，我们穿两件毛衣她却穿件短袖，不停地扇扇子，一个劲叫热。