Based on the principle of energy, the paper discusses the elastic stability of high pier with non-uniform section.
本文基于功能原理，讨论了变截面桥墩的弹性稳定性。
Test section design, test techniques and test data processing are one of the key technologies of test research of CHF for non-uniform axial power shapes in rectangle narrow channel.
矩形窄缝通道轴向非均匀加热临界热流密度试验研究的关键技术包括试验本体设计、试验技术、试验数据处理等，而试验本体的设计是试验研究能否正常开展的关键。
The deformations and the internal forces at a cross section of a beam are taken as state variables to formulate a general equation for computing the natural frequencies of non-uniform beams.
导出了用变形、内力作为混合状态变量表示的求解等截面梁的横向振动固有频率的普遍方程。
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