The longitudinalresponse frequency and damping features of the flexible wing at both modes of long and short periods are also better than those of the fixed wing.
柔性翼的长周期和短周期模态的衰减特性和阻尼特性略优于刚性翼。
2
Uneven settlement of soft_soil foundation will cause changes of longitudinal mechanical properties, and generate stress response destroying pipelines, thereby will cause engineering accidents.
软土地基的不均匀沉降将导致管道纵向力学性状的变化，产生破坏管道的应力响应，从而引发工程事故。
3
A lot of subjects such as the difference between longitudinal and transverse conductivity, proton compensate, frequency response, and sample geometry etc, remained for further study.