Kb_read：报告在测量时间间隔中从物理卷读取的总数据量(单位为千字节)。

Kb_read: Reports back the total data (kilobytes) from your measured interval that is read from the physical volumes.

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Kb _ wrtn：报告在测量时间间隔中向物理卷写入的数据量(单位为千字节)。

Kb_wrtn: Reports back the amount of data (kilobytes) from your measured interval that is written to the physical volumes.

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等候指定的阵列中任何元素都收到信号，使用 32 位元带正负号的整数以测量时间间隔。

Waits for any of the elements in the specified array to receive a signal, using a 32-bit signed integer to measure the time interval.

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