• 1. Variation Margin: 变动保证金 | 追加保证金 | 价格变动保证金根据每天的评估决定并发出用以因价格变动而补偿损失的追加要求 | 盈亏保证金
• 2. wider margin of variation: 较大幅度的偏差
• 3. variation n margin: 追加保证金 | 变动保证金

• 1.The EW-trending strain variation along the western margin is the maximum and it is characterized by the alternatively positive and negative variations from the west to the east;
  东西向应变西边缘变化最大。 此外，由西向东还具有正负交替的变化特征；
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• 2.By using the voltage stability analysis with uncertain factors of load variation considered in computation, more information about the critical point and the minimal power margin will be offered.
  考虑负荷变化随机性的电压稳定分析方法可以更多地计及不确定因素，提供更丰富的电压稳定临界点以及最小功率裕度的信息。
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• 3.By the solid example, reasons that measuring errors, because of minimal variation of cross-coupling matrix, are cleared, and methods for calculating the upper limit of error margin are described.
  通过具体的计算实例，阐明了因耦合矩阵的摄动，引起测量误差上限的计算方法。
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