economical service life

常见例句

Poor durability, short service life and low economical efficiency of bridges have become a worldwide difficult problem.
桥梁耐久性差、服务寿命短及全寿命经济性指标差等问题已成为世界性难题。
Bonded composite repair has been recognized as an efficient and economical method to extend the service life of damaged aircraft metallic structures.
损伤金属飞机结构的复合材料补片胶接修理技术是一项经济而有效的结构延寿方法。
The procedures can realize economical life assessment of transformer in-service, renew decision, economic operation way analyze and operating characteristic analysis, and so on;
在功能方面，系统可实现在役变压器经济寿命评估、更新决策、经济运行方式分析以及运行特性分析等各种功能；