最大可用频率

The underfrequency load shedding scheme is used to stop the frequency decline and restore frequency in case of severe upsets. Based on some basic principles given in the paper, the entire underfrequency load shedding scheme has been achieved in the single-machine system model and then tested in the multi-machine system model.

在UFLS的设计过程中，本文针对现代大型电力系统对频率动态过程的基本要求，提出了一套用于UFLS方案设计和效果分析的基本准则，在此基础上提出了单机模型下的最大可用容量切除法用于UFLS基本级的设计，讨论了恢复级的设计原则并给出了一组设计结果，所得的UFLS方案在多机系统中进行了详细的校核。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。