1) multiple-step beams
多阶梯梁
2) stepped beam
阶梯梁
1.
Differential equations of free/forced vibrations of stepped beams under axial loadsare established and the general solutions are obtained.
用奇异函数建立轴向受载的阶梯梁自由振动和强迫振动的微分方程并求得其通解，用W算子给出主振型函数的表达式及常见支承条件下粱的频率方程。
2.
In this paper,on the basis of the result in article[1], the approach linking dynamic measurementand BEM is further used to identify the elastic support stiffness of a stepped beam with attached lumpedmasses.
本文在文献［１］的基础上，又做了进一步的工作，即将动态测试与边界元相结合的方法用于识别有集中质量阶梯梁的弹性支承刚度。
3.
Vibrations of multiple stepped beams with cubic nonlinearities were considered.
研究了具有三次非线性项的多阶梯梁的振动。
3) stepwise beam
阶梯梁
1.
A general solution to the deflection equation of stepwise beam under pressure is derived with Laplace s transformation,examplified by hinged stepwise beam;Based on this, the method of calculating the critical pressure of hinged stepwise beam is given by an example
本文以铰支阶梯梁为例，采用Laplace变换给出受压力作用的阶梯梁挠曲线的通解，并结合实例说明铰支阶梯梁临界压力的求法。
2.
Based on considing shearing deformation,the coupling rigidity about bending stiffness and shearing stiffness of stepwise beam is presented by eviside func- tion.
本文在考虑剪切变形的基础上,采用 Heviside 函数来表示阶梯梁抗弯刚度和剪切刚度的耦合刚度。
4) Bench-shaped beam
阶梯状梁
5) Stepped cantilever beam
阶梯悬臂梁
6) stepped thin-walled beam
阶梯薄壁梁
补充资料：多苯基多亚甲基多异氰酸酯
多苯基多亚甲基多异氰酸酯，简称PAPI，或称粗MDI，浅黄色至褐色粘稠液体．有刺激性气味。相对密度(20℃／20 ℃)1．2，燃点218℃。PAPI实际上是由50％MDI与50％官能度大于2以上的多异氰酸酯组成的混合物。升温时能发生自聚作用。溶于氯苯、邻二氯苯、甲苯等。PAPI的活性低，蒸气压低，只是TDI的百分之一，故毒性很低。
用于制造聚氨脂胶粘剂。也可直接加入橡胶胶粘剂中，改善橡胶与尼龙或聚酯线的粘接性能。贮存于阴凉、通风、干燥的库房内，远离火种、热源。严格防水、防潮，避免光照。
用于制造聚氨脂胶粘剂。也可直接加入橡胶胶粘剂中，改善橡胶与尼龙或聚酯线的粘接性能。贮存于阴凉、通风、干燥的库房内，远离火种、热源。严格防水、防潮，避免光照。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条