The former is used to achieve the fine estimation of the carrier frequency while the later is used to achieve the fine estimation of the code delay of the PRN code.
载波跟踪环用于对接收信号的载波频率进行精确跟踪，而码跟踪环是用于实现伪随机码延时的精确对准。
Whether you need to double back and revisit some old code, write some more test cases, or even delay a deadline — do it.
不管是否需要你回顾还是重新查看一些旧代码，都要多写一些测试用例，甚至推迟截止日期也要这么做。
With this new code under our belts, it's time to remeasure the data point that used the custom delay-inducing client with SACK options turned on.
准备好这些新代码后，现在开始重新测量使用定制的延迟引入客户机(启用SACK选项)的数据点。
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