@startuml robust "DNS 解析器" as DNS robust "网页浏览器" as WB concise "网页用户" as WU @0 WU is 空闲 WB is 空闲 DNS is 空闲 @+100 WU -> WB : URL WU is 等待 WB is 处理中 @+200 WB is 等待 WB -> DNS@+50 : 解析URL @+100 DNS is 处理中 @+300 DNS is 空闲 @enduml Submit amiga aws-orange black-knight bluegray blueprint cerulean-outline cerulean crt-amber crt-green cyborg-outline cyborg hacker lightgray mars materia-outline materia metal mimeograph minty plain reddress-darkblue reddress-darkgreen reddress-darkorange reddress-darkred reddress-lightblue reddress-lightgreen reddress-lightorange reddress-lightred sandstone silver sketchy-outline sketchy spacelab spacelab-white superhero-outline superhero toy united vibrant       🎉 Discover the future PlantUML Web Editor! 🚀  PNG  SVG  ASCII Art