p 90的仪表指示数与标准的平均速率越接近，这个站点对投资者吸引力越大。

The closer the P90 reading is to the measured average speed, the more attractive the site becomes to investors.

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由于不同的同位素有不同的衰变速率，每种方法都不会拘泥于标准数值。

Because different isotopes decay at different rates, each method provided a slightly different measuring stick.

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SCSI-2 标准出现于 1985 年，它的出现使数据速率更快（10MHz），总线也更宽（16 位）。

The SCSI-2 standard began in 1985 and resulted in a faster data rate (10MHz) and a wider bus (16 bits).

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