output variation

The risk index was used to describe the importance of every reactive source, and can effectively reflect the uncertainties of the system and the consequences of reactive source output variation.

其中，风险指标被用来描述各个无功电源的重要性。该指标能够有效地反映系统的不确定性以及由于无功出力变化所带来的后果影响。

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The decrease of the precipitation, large increase of the agricultural output, variation of the crop growing structure and the building of the hydraulic project in the headwater area all tie up with the decline of the groundwater table.

降雨量的减少、衣业产量的大幅度提高、种植结构的变化以及上游水利工程的修建，都与地下水位的下降有着密切联系。

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The dynamic errors are mainly timing error, clock jitter, finite output impedance, output variation effect and nonlinear switching transient.

动态误差主要有时序误差、时钟抖动、有限输出阻抗、输出波动效应、开关瞬态非线性等。

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