本文从膜片弹簧受力变形后内部应力分布着手，分析了膜片弹簧早期弹力衰减的原因。
The causes for the elastic force attenuation of diaphragm spring are analyzed based on the stress distribution of loaded diaphragm spring.
作为海上用绳索，导致性能衰减的原因包括拉伸、磨损、日晒、雨淋以及海水腐蚀等。
For Marine ropes, there are variant factors which produce degradation. They include tensile, wear and tear, sunlight, raining and corrosion in sea.
由观测事实出发本文讨论了地震尾波衰减率在大地震前后发生变化的可能原因。
On the basis of the observational data, this paper also discusses the probable reasons causing the variation of the coda wave attenuation rate both before and after strong events.
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