另外一个理解方法是，散度是源头的“冒出率”，它是流体往系统输入的量，也就是单位时间内，单位面积新冒出的流体。
The other way to think about it is divergence is the source rate, it is the amount of fluid that is being inserted into the system, that is being pumped into the system per unit time per unit area.
数据由称为硬件的专门设备来处理，这些设备包括输入装置，系统单位装置以及二级存储装置。
Data is processed by specific equipment that is often called computer hardware. This equipment consists of input devices, a system unit devices, and secondary storage devices.
选出待分派的作业或任务。在某些操作系统中，其它作业单位，诸如输入输出操作，也可被调度。
To select jobs or tasks that are to be dispatched. In some operating systems, other units of work such as input-output operations may also be scheduled.
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