如果请求通过资源或处理需求花了很长时间，那么通过添加更多的线程，可以提高感知到的服务质量。
If requests take a long time by way of resource or processing needs, the perceived quality of service can be improved by adding more threads.
实验表明采用该方法可以使同步系统满足用户提出的可感知服务质量，而且具有较高的缓冲区利用率和满意的端到端时延。
With this method, synchronization system can always meet the perceived QoS defined by user. Additionally, it also has high buffer utilization and satisfied end to end delay.
一种光学基材，具有结构性表面，该表面增强亮度或辉度，并降低结构缺陷对感知到的图像质量的影响。
An optical substrate possesses a structured surface that enhances luminance or brightness and reduces the effects of structural defects on perceived image quality.
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