mainshaft的用法和樣例：
例句
- Then experiment on the mainshaft unit's dynamic balance is performed using a dynamic balancing tester.
並在動平衡試驗機上對主軸進行了動平衡實驗。 - The optimization effect of this method is proved by instance design and production and the operating of mainshaft is enhanced greatly.
通過實例設計和生產實驗證實了該方法的優化效果，主軸使用壽命有了顯著的提高。
