【摘 要】
：
·专家论坛·1.航空测控技术是航空技术的重要组成部分······……塑l2.我国卫星移动通信、导航定位及 航天测控技术发展趋向····················
论文部分内容阅读
·专家论坛·1.航空测控技术是航空技术的重要组成部分······……塑l2.我国卫星移动通信、导航定位及 航天测控技术发展趋向·····························...,…阴13.加强航空测控技术的预研工作····················
· Expert Forum · 1. Aviation monitoring and control technology is an important part of aviation technology ...... Plastic l2. China’s satellite mobile communications, navigation and positioning technology and space flight monitoring and control technology trends ... ·················································································· ··················································································································································································································································································································· ·····
其他文献
1.一种用于测量外场力电桥信号的便携式3(1/2)位峰值检测器,由航空航天部618所研制成功,该仪器全用CMOS器件组成,单片机控制,液晶显示。整机体积小、功耗不大,并经现场使用
谷子是张家口坝下地区的主要粮食作物。历年种植面积150万亩,占粮播面积的12％,全区平均单产不足200斤。但高产典型很多。如张家口市杨家山大队,千亩旱地春谷连年上“纲要”;
以色列一家公司近日研发了一种对话程序 ,它将改变人类与机器交流的方式。这个由人工智能企业 (ＡｒｔｉｆｉｃｉａｌＩｎｔｅｌｌｉｇｅｎｃｅＥｎｔｅｒｐｒｉｓｅｓ)开发的程序能够与人对话 ,并且其词汇量和对语言的掌握已经相当于 1 5个月大
三熟制小麦,要夺取高产比一般小麦夺取高产,在品种上、节令上有着更高的要求,它不仅要求小麦高产,同时也要解决早稻、晚稻的高产问题。根据我们在永上12队点上几年的实践,要
物作玉术叶的研究················…….’.二·,.’.’.’.’...,’....··..···········,························
近年来.我地区花生种植面积不断恢复扩大,产量也有所上升,但仍处于低产局面。要想提高花生产量,除采取深翻整地,增施粪肥、加强田间管理等措施外,选留种子提高纯度也是急需
目的：探讨大黄素干预结缔组织生长因子、基质金属蛋白酶-9在阿霉素肾病大鼠蛋白尿形成期肾间质的表达趋势，探讨中医药疗法存防治慢性肾脏疾病、肾间质纤维化中的理论依据。
目的：探讨老年糖尿病并发足溃疡的临床特点、危险因素。 方法：选择2010年1月至2016年6月期间于我科住院的70例老年糖尿病并发足溃疡患者为实验组，选择同期住院未发生足部溃疡
本文介绍一种典型的工业控制系统MIDAS-8000与微机的数据通讯的实现。该系统通讯软件采用通用的FOR TRAN77及MASM语言编制、具有结构简单,操作灵活和信息量大等特点。系统可
棉花生育后期,主要指盛花期后到吐絮这段时间。我省一般是八月上旬——九月上旬。棉铃开始吐絮到收花结束即为成熟吐絮期(从9月上旬——11月上、中旬)。棉花进入吐絮期后,营