“deviation”的概念、定义、翻译、参考文献-科学参考

　

单词	deviation
释义	deviation Physics 1. (angle of deviation) The angle formed between a ray of light falling on a surface or transparent body and the ray leaving it. 2. The difference between one of an observed set of values and the true value, usually represented by the mean of all the observed values. The mean deviation is the mean of all the individual deviations of the set. See standard deviation. Mathematics If {x_i} is a set of observations of the random variable X then $x_{i} - \bar{x}$ is the deviation of the i‐th observation from the mean. Chemical Engineering The departure from a desired or expected process value. Monitoring departures from expected operating conditions forms the basis of process control. Electronics and Electrical Engineering 1. (variation; error) The difference between the observed value of a measurement and the true value. In automatic control systems it is the difference between the instantaneous value and the desired value. 2. See frequency modulation.
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