time-series model的用法和樣例：
例句
- The course is an introduction to univariate and multivariate time series models.
本課程是對于單變量與多變量時(shí)間序列模型的一個(gè)介紹。 - The Chinese population time series models have been formulated, but the Shaanxi population time series model has not been researched into.
對全國人口總量時(shí)間序列模型，已進(jìn)行了一定的研究，對陜西省人口總量時(shí)間序列模型尚未研究。
