卫星系统

A total of 36.2 Mb of publicly available DNA sequence in basidiomycetes, Coprinus cinereus was investigated from mono-to hexa-nucleotide simple sequence repeat to determine the type, size and frequency.

本研究利用已公布的灰盖鬼伞基因组测序结果，对该真菌基因组中的微卫星或简单重复序列(simple sequence repeats， SSRs)进行了系统分析。

By using canonic signed digit to represent each coefficient of FIR filter and local search method to optimize the coefficients, we implement a multiplier-less FIR filter.

利用卫星数字电视广播系统中接收信号的频谱特性，提出一种基于离散傅立叶变换的载波恢复算法。

In this paper the mathematical models and methods for GPS single-point positioning are studied systematically on the theory.All kinds of error correction formulas are studied,such as ironsphere correction,troposphere correction,relativistic effect correction,earth rotation correction ,earth tides correction ,satellites antenna phase center offset correction. GPS single-point positioning programs is coded with pseudoranges and broadcast ephemerides,phases and broadcast ephemerides,and phases and precise ephemerides.And a great amount of computation has been done using the data collected .The results are computed with the 24 hour pseudoranges observation data before and after the canceling of the SA.

本文从理论上系统地研究了GPS单点定位的数学模型和方法，研究了各项误差改正公式，例如电离层改正、对流层改正、相对论周期部分改正、地球旋转改正、地球固体潮改正、卫星天线相位中心偏差改正；编写了伪距与广播星历、相位和广播星历及相位和精密星历的定位程序，并使用有关数据进行了大量的计算工作。

Because microsatellite DNA accords with Mendelian inheritance and can reflect population relationship more reliability. mtDNA is extranuclear inheritance and belongs to maternal inheritance and is not superiority in population relationship analysis.

由于微卫星DNA符合孟德尔遗传规律，能够反映群体间的亲缘关系，构建的系统发育树结构可靠。mtDNA是核外遗传物质，具有母系遗传的特点，在反映群体间的亲缘关系上不具优势。

Using WWW as its platform, EWSSWE generates and demonstrates a series of forecast and early warning products, including the diagnoses of the severe convection indexes, extrapolative products based on satellites/radars, mesoscale model prediction outputs as well as probability products of severe weather outlook and early warning via "the composite nesting method".

&突发性强灾害天气预警系统&以WWW为平台，融贯多种天气预报新技术，为各类用户提供了崭新的预报视角和技术含量较高的预报产品；产品包括强对流指数诊断、基于卫星和雷达的外推产品，中尺度数值模式预报产品，以及基于&综合叠套技术&给出的强天气展望和强天气临近概率预报产品等。

In this paper the Datum-shift parameters are determined using the map of geoidal undulation based on Rapp's 180×180 solution and the computed values of geoidal un- dulation with respect to WGS-72 system as well as the map of geoidal undulation with respect to local geodetic coordinate system-1980 of our country.

武汉测绘学院学报，，编辑部邮箱 1981年 02期卫星多普勒；地心坐标系；转换参数；大地坐标系；大地水准面差距；本文利用 Rapp 180×180阶解和 WGS-72系统的绝对大地水准面差距分别同我国80大地坐标系的相对大地水准面差距相配合推算了平移转换参数。

Namely, this system utilizes perfect GPS combines GIS of transportation and tele鎜m industry broadened mobile communication network of GSM in china, with the help of data operation of GIS and spatial analysis technology, this build up a conducting control system which put together transference conduct scientific management, harmonial operation and safety defence, it also strengthen the safety defence ability of some unforseseen hazard and so on.

即利用成熟的GPS全球卫星定位技术，结合GIS-T交通地理信息系统，以及我国电信行业在全国所开通的GSM移动通讯网络，在GIS的数据操作及空间分析技术的辅助下，建立集调度指挥、科学管理、协调运营以及安全防范为一体的指挥控制体系，并加强对不可预见之危险的安全防范能力等。

The primary products have the seeing and hearing product of portable, the digital incept system of satellite, switching power, high frequency transformer and so on.

主要产品有便携式视听产品、数字卫星接收系统、开关电源、高频变压器等。

Job experts who communicate by letter throw this feasible whole world more distant with sight having faced fourth communicating by letter on behalf of displacement, to look forward to on behalf of moving an insolvable problem coming to resolve 3 G communication system by fourth, the nothing crack realizing the wireless network of commerce , local area network , blue-tooth , radio and television, satcom ultimately is link up and mutually compatible, realize "anybody fond dream switching in a network with any form in any place" really.

这使得全世界通信业的专家们将目光更远地投向了第四代移动通信，以期通过第四代移动通信系统来解决3G无法解决的问题，最终实现商业无线网络、局域网、蓝牙、广播、电视卫星通信的无缝衔接并相互兼容，真正实现&任何人在任何地点以任何形式接入网络&的梦想。

The city of GuangZhou began to plane to set up forest fire prevention system which covered the whole city in 2002, which kerneled portion is what the paper study. The GIS platform which is used in the project is ArcGIS8. 3 provided by ESRI in USA, and the Database used in it is ORACLE which take Solaris as operation system.

该系统所使用的GIS平台为美国ESRI公司提供的ArcGIS8.3，数据库为建立在Solaris操作系统中的ORACLE，采用面向对象的设计方法，以VC++6.0、VB为开发具，结合广州市卫星影像数据、数字化地形图与专题图件，研究期间，调查、收集了大量的属性数据与空间数据，进行了近三年的研究开发工作，目前项目已开发完成并得到了用户和有关专家的肯定。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。