The most likely candidate for variablepersistence is a simple string value.
变量持续性最有可能的候选对象，是一个简单的字符串值。
2
The main difference of college students learning behavior is persistence, so the study chooses learning persistence as a dependent variable.
大学生学习行为的差别，其一就表现在行为的坚持性，所以本研究选取学习坚持性作为本研究的变量。
3
Then we go on with the correlation between multi-variable: fractional co-integration and co-persistence in variance, and discuss their modeling method.