专业英语第5章课后题翻译_数学专业英语课后翻译

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第五章

1.当被测量不随时间变化或随时间变化缓慢时，输出y与x之间的关系称为静态特性；当被测量随时间迅

速变化是，输出y与x之间的关系称为动态特性。

翻译：While the measurand has no change or change very slowly over time,the relationship between output y and input x is defined as Static performance.But while the measurand change rapidly over

time,the relationship between output y and input x is called Dynamic performance.2.测量是为了准确了解被测物理参数，但是人们通过测量是永远测不到被测物理参数真值的，只能观测到经过测试系统各个环节对被测物理量传输后的输出量。研究系统的特性就是为了能使系统尽可能准确、真

实地反映被测物理量。

翻译：Measure is in order to find out the physical parameters of the measurand precisely,people can only

observe the output of measurandphysical parameters which transmitted by every elements in a measurement system and never find out the true value via measurement,the destination of our research

is to make the system reflect measurand as precise as poible.3.A radom error is due to a large number of independent small effects that cannot be identified or controlled,it is a statistical quantity.As such,it will vary from each replication of the observations.If a large number of readings is observed for the same quantity, the scatter of the data about a mean value can be evaluated.The scatter generally follows a gauian distribution about a mean value,which is aumed to

be the true value.翻译：随机误差是由许多无法识别和控制的小效应而产生的，是一个统计量。就其本身而言，在每个观测结果下都是不同的，如果大量被观测数据都有一定数量，那么我们可以评估这些数据在均值周围的分布，这种分布在均值周围一般都满足高斯分布，并可近似看作是真值。

4.Accuracy is the deviation of the output from the calibration input or the true value.If the accuracy of voltmeter is 2% full scale as described in the preceding section,the maxmum deviation is ±2 units for all

reading.精度是输出值与真值之间的偏差，如果一个电压表的满量程精度是2%，那么它所有读数的最大偏差为±2

个单位。