preoperation的用法和樣例：
例句
用作名詞 (n.)
- The problem existing in preoperation has been analyzed and resolvent has been given.
分析了智能監控終端在試運行期間出現的問題並提出了解決辦法。 - This paper analyzes the familiar abnormal phenomena on the installation and preoperation process of electromechanical equipment and gives some countermeasures.
本文分析了機電設備安裝試運行過程中常見的異常，對如何進行解決提出了一些對策。
