service cycle

例句：

1. 1. The company's service cycle is designed to ensure customer satisfaction.
   该公司的服务周期旨在确保客户满意度。
2. 2. The new model has a longer service cycle than the old one.
   新款模型的维护周期比旧款长。
3. 3.The manufacturer's warranty covers the entire service cycle of the product.
   制造商的保修覆盖了产品的整个服务周期。