It applied bifurcation approach of elementary catastrophe theory to find out control parameters' bifurcation values, which decide stability of power systems, further, stability region can be obtained.
它运用初等灾变理论中分岔的概念找出决定电力系统稳定的控制参数的分岔值，从而确定了系统的稳定区域，由稳定区域即可进行系统的稳定判断。
The theoretical and practical probes into the theory of credit risk control are still in the elementary stage in our country.
信用风险控制理论与实践探讨在国内还处于相当初级的阶段。
The theoretical and practical probes into the theory of credit risk control are still in the elementary stage in our country.
信用风险控制理论与实践探讨在国内还处于相当初级的阶段。
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