不能将断言同实例的类变量声明一块使用，但却可以将其置于任何方法内。
An assertion cannot be used with class variable declarations for instance, but can be placed within any method.
这个概念同编程语言中变量类似。
This concept is similar to variables in programming languages.
样本主成分和样本因子分析法已成为一种最主要的综合评价方法之一，指标变量的同趋势化是运用该方法的重要步骤。
Sample principal component analysis and factor analysis has been one of the main methods of composite analysis, the communalities of variables is a key step of using these methods.
相电流差突变量选相元件在单回线故障中具有良好的选相性能，但在同杆双回线跨线故障中可能误选相。
Although fault component current phase selector has excellent performance for single transmission lines, it may select unwanted phase for cross-country faults in double-circuit lines on a same tower.
相电流差突变量选相元件在单回线故障中具有良好的选相性能，但在同杆双回线跨线故障中可能误选相。
Although fault component current phase selector has excellent performance for single transmission lines, it may select unwanted phase for cross-country faults in double-circuit lines on a same tower.
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