1990
共 116 篇文章
1990 相关的电子技术资料，包括技术文档、应用笔记、电路设计、代码示例等，共 116 篇文章，持续更新中。
gjb 907-1990 产品质量评审规范
<p>产品质量规范，国军表。评审过程中需要的标准规定，都描述的相当清楚，你可以参考一下，用户产品审核时候的质量保障。<br/></p>
电子产品老化相关资料及标准合集
GBT2423.51-2000 电工电子产品环境试验第2部分 试验方法试验ke 流动混合气体腐蚀试验.pdf
535KB2019-03-29 13:34
GBT2423.50-1999 电工电子产品环境试验第2部分 试验方法试验cy 恒定湿热主要用于元件的加速试验.pdf
319KB2019-03-29 13:34
GBT2423.49-1997 电工电子产品环境试验第2部分 试验方法试验fe 振
VIP专区-电子产品老化相关标准资料
<font color="red">资源包含以下内容：</font><br/>1.GBT2423.07-1995 电工电子产品环境试验第2部分 试验方法试验ec和导则倾跌与翻倒(主要用于设备型样品).pdf<br/>2.GBT2423.08-1995 电工电子产品环境试验第2部分 试验方法试验ed自由跌落.pdf<br/>3.GBT2423.09-2001 电工电子产品环境试验第2部分 试验方法试
Ecodesign+Preparatory+Study
Since the 1990s the EU has been pursuing climate change mitigation targets. Following the<br />
international commitment to the legally binding greenhouse gas reduction under the Kyoto<br />
Protocol,
Wireless Networks Multiusers Detection
Wireless networking is undergoing a transformation from what has<br />
been primarily a medium for supporting voice traffic between telephones,<br />
into what is increasingly becoming a medium for su
Theory+and+Applications+of+OFDM+and+CDMA
Wireless communication has become increasingly important not only for professional appli-<br />
cations but also for many fields in our daily routine and in consumer electronics. In 1990,<br />
a mobi
Software+Defined+Radio
Until the mid-1990s most readers would probably not have even come across the term soft-<br />
ware defined radio (SDR), let alone had an idea what it referred to. Since then SDR has made<br />
the tr
Light+Propagation+in+Gain+Media
An optical fiber amplifier is a key component for enabling efficient transmission of<br />
wavelength-divisionmultiplexed(WDM)signalsoverlongdistances.Eventhough<br />
many alternative technologies we
GSM, GPRS and EDGE Performance Evolution
The wireless market has experienced a phenomenal growth since the first second-<br />
generation (2G) digital cellular networks, based on global system for mobile<br />
communications (GSM) technology
Digital Audio Broadcasting Principles
The new digital radio system DAB (Digital Audio Broadcasting, nowadays often called<br />
Digital Radio) is a very innovative and universal multimedia broadcast system which will<br />
replace the exi
Coding+for+MIMO+Communication+Systems
Employing multiple transmit and receive antennas, namely using multi-input multi-output<br />
(MIMO) systems, has proven to be a major breakthrough in providing reliable wireless<br />
communication l
我厂1#机组是1990年投产的300MW火电机组
我厂1#机组是1990年投产的300MW火电机组，热工控制系统DCS采用美国Beiley公司生产的N-90 集散控制系统（1987年生产的控制产品），包括CCS(协调控制系统)和BMS（燃烧器管理系统）两个主要系统
一些标准聚类分析程序
一些标准聚类分析程序，详细说明见《聚类分析引论》（1990）
两个广泛的调查表明
两个广泛的调查表明，计算机专业人士比一般人更加“内向”，MBTI测试中的“内向”只是表示对内心的想法而不是对外部世界的人和事更感兴趣。大约有50％～65％的计算机人士表现为性格内向，而普通人只有25％～33％（Lyons 1985, Thomsett 1990)
"The GRAPHICS GEMS Series" was started in 1990 by Andrew Glassner. The vision and purpose of the Ser
"The GRAPHICS GEMS Series" was started in 1990 by Andrew Glassner. The vision and purpose of the Series was - and still is - to provide tips, techniques, and algorithms for graphics programmers. All o
中国股市分析
中国股市分析，2008年数学建模预测，股市是股票市场或股票交易市场的简称，也称为二级市场或次级市场，是股票发行和流通的场所，也可以说是指对已发行的股票进行买卖和转让的场所。在我国，沪深股市是从一个地方股市发展而成为全国性的股市的，1990年12月正式营业。以上证为例，有A股、S股、ST股等，其中A股也称为人民币普通股票、流通股、社会公众股、普通股，以人民币认购和交易。A股不是实物股票，以无纸化电子
开锁程序,可以通过DA1990a打开门的锁
开锁程序,可以通过DA1990a打开门的锁，并不需要注册钥匙。
DS1990在CVAVR中的实现
DS1990在CVAVR中的实现，供大家参考。
* * Headers and defines for d3des.c * Graven Imagery, 1992. * * Copyright (c) 1988,1989,1990
*
* Headers and defines for d3des.c
* Graven Imagery, 1992.
*
* Copyright (c) 1988,1989,1990,1991,1992 by Richard Outerbridge
* (GEnie : OUTER CIS : [71755,204])
DESIGN PATTERNS JAVA COMPANION Design patterns began to be recognized more formally in the early 1
DESIGN PATTERNS JAVA COMPANION
Design patterns began to be recognized more formally in the early
1990s by Helm (1990) and Erich Gamma (1992), who described patterns
incorporated in the GUI applicat