Mixing
大圆
大圆（英语：great circle）是球面上半径等于球体半径的圆弧。大圆线是连接球面上两点最短的路径所在的曲线。大圆线是球面上半径最大的圆弧，所有的經線都是大圆线，緯線則只有赤道而已。
地球上重要的大圆线
- 赤道
- 本初子午線
- 晨昏圈
參見
- 大圆距离
- 北極航線
- 西北水道
- 北方海路
外部連結
Great Circle Mapper - 大圓航線繪圖網站
Information security
This article is part of a series on Information security Related security categories Internet security Cyberwarfare Computer security Mobile security Network security Threats Computer crime Vulnerability Eavesdropping Malware Spyware Ransomware Trojans Viruses Worms Rootkits Bootkits Keyloggers Screen scrapers Exploits Backdoors Logic bombs Payloads Denial of service Defenses Computer access control Application security Antivirus software Secure coding Secure by default Secure by design Secure operating systems Authentication Multi-factor authentication Authorization Data-centric security Encryption Firewall Intrusion detection system Mobile secure gateway Runtime application self-protection (RASP) v t e Information security , sometimes shortened to InfoSec , is the practice of preventing unauthorized access, use, disclosure, disruption, modification, inspection, recording or destruction of information. Th
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