1)  500 kV transmission line tower
500 kV输电铁塔
1.
By using the method that 500 kV transmission line tower actual reliability was estimated through using probability knowledge,500 KV transmission line tower simplification model was es- tablished,and its failure model numbers was computed according to real project.
利用概率论知识估算500 kV输电铁塔实际可靠度的方法,建立了500 kV输电铁塔可靠度简化计算模型,并根据工程实际确定了失效模式个数。
2)  500 kV
500 kV
1.
Study on 500 kV Substation Automation System;
500 kV变电站自动化系统的研究
2.
Analysis on startup experiment of 500 kV substation;
500 kV变电站启动调试分析
3.
This paper analyses several deicing methods which make use of heat and concludes that melting ice using dc current is the only viable way of deicing by heat to 500 kV transmission line.
通过对几种热力除冰法进行分析比较发现,对500 kV输电线路,采用直流电流融冰是唯一可行的热力法。
3)  Top 500
500强
1.
Research on Longevity Index for Enterprises——Paradigm Analysis of "Fortune" Top 500 in the U.S.;
企业长寿指数研究——《财富》之美国500强范例分析
2.
Evaluation of Industry Comprehensive Strength and Positive Research on the China s Top 500;
产业综合实力评价及500强的实证研究
4)  S&P 500
S&P500
1.
This paper documents a statistical and structural analysis on the stochastic and dynamic relationships between a set of 10 selected macroeconomic indicators andS&P 500 index, following the methodology of the Arbitrage Pricing Theory (APT).
本文以无套利定价模型的思想为基础,用统计分析的方法,检验了10个宏观经济指标和美国标准股指S&P500的关系。
5)  Global 500
世界500强
1.
Global 500 in 2007 Has Announced,Sinopec Enters into 20 Largest Corporations for the First Tune;
2007年世界500强揭晓 中国石化首次跻身20强
2.
Latest Announce of Global 500 in 2006,Sinopec Stands 23rd on the List,Occupying First Place among Chinese Companies being Selected;
2006年世界500强最新揭晓中国石化列第23位居入选中国公司之首
3.
Study on Merger and Acquisition among Global 500 Companies;
世界500强间的重组并购研究
6)  5×1010m3
500亿m3
参考词条
补充资料：铁塔
【铁塔】
　（传说）南天竺有铁塔，收藏一切秘部大经，龙猛菩萨（旧译龙树）入其中，值金刚萨埵，传受两部之大经，金刚智三藏口传，其弟子沙门智藏（不空三藏之法讳），记之于金刚顶经义诀，是铁塔说之本据也。日本东密台密皆依用之而不疑。安然之教时问答三曰：“沙门智藏金刚顶义诀云：此经有百千颂广本，（中略）其大经本阿阇梨云：经荚广长如床，厚四五尺，有无量颂。在南天界铁塔之中，佛灭度后数百年间无人能开。此塔以铁扇铁锁而封闭之。其中天竺国佛法渐衰时，有大德先诵持大毗卢遮那真言，得毗卢遮那佛而现其身，现于多身于空中说此法门及文字章句，次第令写讫即灭。即毗卢遮那念诵法要一卷是。时大德持诵成就，愿开此塔，于七日中绕塔念诵。以白芥子七粒打此塔门，乃开塔门。诸神一时踊怒，不令得入。唯见塔内香灯光明一丈二丈，名华宝盖，满中悬列。又闻赞声。此大德至心忏悔，发大誓愿，然后得入塔中。入已，其塔寻闭。经于多日诵此经王广本一遍，为如食颂。得诸佛菩萨指授所堪记持不忘，便令出塔。塔门还闭如故。”弘法之付法传下，亦叙此说，终曰：“然前所述事略，载金刚顶义决中。”
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