单元测试不处理数据库、文件系统或任何可能延长测试运行时间的内容；因而，从第一天就可以编写单元测试。
Unit tests don't deal with databases, file systems, or anything else that would tend to make tests run longer; consequently, unit tests can be written from day one.
由于等式中的一半是静态的，并且只有当一个单元被升级或替换时结果才会改变，因此处理器繁忙时间所占百分比可以很好地指示当前被使用的资源。
Because half of this equation was static and only changed when a unit was upgraded or swapped out, the processor busy number was a good indication of the resources being used.
由于计算所需要的单元数减少，处理该问题所需要的时间也明显减少。
Due to the sharp reduction of the number of the element, the time needed for processing this problem is much less.
线程是操作系统分配处理器时间的基本单元，并且进程中可以有多个线程同时执行代码。
Threads are the basic unit to which an operating system allocates processor time, and more than one thread can be executing code inside that process.
中央处理器时间：在计算机的算术和逻辑单元里，处理一组指令所需要的实际计算时间。
CPU time: the actual computational time necessary to process a set of instructions in the arithmetic and logic units of the computer.
在该模型中引入仿真对象并将其作为仿真处理的基本单元；引入事件发生的时间属性并将其作为时序的依据，使并行执行的事件能被正确有效地处理。
In this model, a simulative object is considered the basic unit, and complex events' time-stamp is discussed, which is used as a proof to make parallel events be processed correctly and effectively.
在该模型中引入仿真对象并将其作为仿真处理的基本单元；引入事件发生的时间属性并将其作为时序的依据，使并行执行的事件能被正确有效地处理。
In this model, a simulative object is considered the basic unit, and complex events' time-stamp is discussed, which is used as a proof to make parallel events be processed correctly and effectively.
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