Because pv cannot calculate the total number of bytes to expect in the transfer, it shows throughput so far, time elapsed, and a special indicator that reflects activity.

因为pv无法计算出要传输的总字节数，它只能显示到目前为止的吞吐量、经过的时间和一个反映活动的特殊标志。

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However, elapsed time is a good indicator of relative performance between statements and routines.

然而，消耗时间(elapsed time)可以很好地显示语句和例程之间的性能对比。

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Portable electric timer functions as elapsed-time indicator, interval timer and electrical apparatus on-off timer.

便携式电子计时器装有已过时间指示器，间隔计时器和电子开关计时器。

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