并得出即使将最大车辆轴重提高到25t,就疲劳而言,这些梁的理论寿命为150年以上,工程寿命为100年以上。
It shows that the fatigue life of these beams is more than 150 years in theory or over 100 years in practise when the 25 tonne axle-weight of vehicle appears .