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变化率
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功率计在满标度的二分之一处的误差变化不应大于满标度的0,25%
the error of a wattmeter at half full-scale shall not vary by more than 0. 25% of full scale for Precision instruments when the power factor is varied between unity and 0. 5 lagging
当功率因数在滞后1 ~0,5变化时
the error of a wattmeter at half full-scale shall not vary by more than 0. 25% of full scale for Precision instruments when the power factor is varied between unity and 0. 5 lagging
当功率因数在滞后1 ~0,5变化时,功率计在满标度的二分之一处的误差变化不应大于满标度的0,25%
the error of a wattmeter at half full-scale shall not vary by more than 0. 25% of full scale for Precision instruments when the power factor is varied between unity and 0. 5 lagging
打牌的概率变化
changing probabilities during play
M M 的
变化率
rate of change in
M M 的
变化率
rate of change of
M 的
变化率
M
rate of change
距离及距离
变化率
测量
range and range rate
距离和距离
变化率
测量
系统
range and range rate
(system)
频率变化
swinging
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