pan data model的用法和樣例：
例句
- In order to overcome the problem of data unavailability, it conducts an empirical panel-data analysis.
在實證檢驗過程中為了克服數據缺乏的問題，採用了面板數據模型進行實證分析。 - This paper explores the effect of integration of trade and investment on the R&D investments by panel data model and principal components analysis.
本文利用面板數據模型，結合主成分分析法，研究了中國貿易投資一體化對研發投入的影響。
