长桁 meaning in Chinese

stringer

At the base of getting a great deal of structure corrode damage data and through statistic fitting method , discovered the rule between outboard wing corroded depth and lifespan at different airport . then we can calculate the inoxidizing coating lifespan , basal body corroding expansion lifespan and first repair time
在获得使用中结构腐蚀损伤的大量数据的基础上，通过统计拟合的方法，取得不同机场飞机外翼长桁腐蚀深度与日历寿命的统计规律的基础上，进而可以求得防护层的有效寿命、基体腐蚀扩展寿命。