在实际的机械扫描运行过程中，电视图像出现了回扫亮线。
But as the mechanical scanning system was working, some scanning light lines were appeared on the TV picture.
传统的图形化编程平台大多采用基于数据驱动的扫描运行算法，CPU占用率高，运行效率低。
Most traditional graphical programming platforms adopt running algorithmic based on data-driven mode, which leads to inefficient use of CPU and low execution performance.
此研究涉及的调查项目包括数据备份，用户密码保护以及运行病毒扫描，根据其调查结果对美国35个大城市进行了排名。
The study looked at practices like backing up data, using password protection, and running virus scans, and ranked 35 big cities across the U.S. based on its survey.
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