period inventory的用法和樣例：
例句
- The accounting recording procedures are different under the periodic inventory system and the perpetual inventory system.
定期盤存制和永續盤存制的會計入賬程序是不同的。 - An alternative to the perpetual inventory system which eliminates the need for recording the cost of goods sold as sales occur.
定期盤存制是與永續盤存制相對應的方法，它不需要在銷售發生時記錄已銷存貨成本。
