range of variables

Although theory analysis and experience accumulation provide a principle for drawing up a plan of a technology in the cup drawing of a cylindrical cup, this only provide a range of choice process variables.

在圆筒件的拉深实践中，虽然理论分析与经验积累已为工艺方案的制定提供了依据与原则，但这仅规定了选择参数的大致范围。

all 1 factors are in a consecutive range of variables.

所有为1的因子在一个连续的变量范围中。

Based on the properties of chaotic phenomena, mutative scale chaos optimization algorithem ( MSCOA) reflects the chaotic variable to the range of variables optimized. high efficiency was obtained by continually minimizing the searching space of variable optimized and enhancing the searching precision.

变尺度混沌优化方法（MutativeScaleChaosOptimizationAlgorithem，MSCOA）利用混沌现象的特点，把混沌变量映射到待寻优变量区间，不断缩小优化变量的搜索空间和提高搜索精度，从而有较高的搜索效率。

power flow calculation considering the constraints of changing range of variables

具有变量范围约束的电力系统潮流计算方法