preventive maintenance的用法和樣例：
例句
- The result of prediction is useful for the preventive maintenance of naval ordnance.
所得預測結果對於進行預防性維修有很大的指導作用。 - It proceeds to introduce in detail the project and constructing process of epoxy asphalt mixture paving, and provides the performance indexes of preventive repairing materials.
進而詳細介紹了環氧瀝青混凝土鋪裝方案及實施過程，並給出了此次預防性維修材料的性能指標。
