For example, a compiler may choose to optimize a loop index variable by storing it in a register, or the cache may delay flushing a new value of a variable to main memory until a more opportune time.
例如，编译器为了优化一个循环索引变量，可能会选择把它存储到一个寄存器中，或者缓存会延迟到一个更适合的时间，才把一个新的变量值存入主存。
Percent Time-Spent-Following (Percent Time Delay) is an important index to estimate Level-of-Service of tow-lane highways.
跟车时间百分比（延误率）是衡量双车道公路服务水平的一个重要指标。
The message delay is an important performance index of tactical data link, and the method of time slot allocation has great effect on the time delay performance.
时延是战术数据链的重要性能指标，时隙分配方案对时延有很大的影响。
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