But for a multi time scale power system, existence and fundamental characteristics of fast manifolds must also be studied in order to obtain the model reduction condition of fixing slow dynamics.
但对于多时间尺度的电力系统模型降阶问题而言，还必须研究快流形的存在性及其基本特征，以给出固定系统慢动态的降阶条件。
The condition of fixing arsenic roasting process has been investigated.
对含砷金精矿固砷焙烧工艺条件进行了研究。
QBASIC was used to make procedure, structure of heat pipe was optimized with complex method on condition that the area of fixing heat pipe was invariable.
利用该模型，采用复合形优化法，用QBASIC语言编程，在安装热管的面积一定状况下对碳钢-水热管换热器的结构进行优化。
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