Unverified50% confidenceFactExact time
现代浏览器采用多进程多线程设计，主线程负责HTML解析、CSS样式计算、JavaScript执行和布局，光栅化线程负责矢量图形转位图，合成线程负责将图层合并输出到屏幕
1
Sources
50%
Confidence
Long-term
Relevance
7/20/2026
First Seen
Sources
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