1) a step long and thin bar pressed by power
阶梯形细长压杆
1.
In this paper we take the finite element theory as tools,study the linear elastic stability problemes systematically for a step long and thin bar pressed by power,gues the basic formula for calculating critical pressure for a step long and thin bar pressed by power,and show the programme method for the Chinese character system finite element.
本文以有限元理论为工具,系统地研究了阶梯形细长压杆的线弹性稳定问题,导出了计算细长压杆临界压力的一般公式 P_(cr)=(λEI_(min)/(L~2)),并提供了汉字系统有限元软件设计的方法。
2) slender compressive rod
细长压杆
1.
The curvature formula of tiny curved rod,together with the vector method of area,is applied to inference for Euler formula about critical load of slender compressive rod which one end is fixed and another is free.
利用杆件微弯的曲率公式和面积向量法,求得一端固定、一端自由压杆的临界压力欧拉公式,为该约束条件下细长压杆的临界压力公式推导提供了另一种方法。
2.
The equilibrium condition of slender compressive rod with tiny curvature,together with the curvature formula,is applied to inference for the equations both of slope and deflection,which apply to all kinds of slender compressive rod.
利用细长压杆微小弯曲的平衡条件和曲率计算公式,得到了统一的压杆转角方程和挠曲线方程,并将其用于几种常见支承条件的细长压杆,方便地求得了相应压杆的临界压力欧拉公式。
3) stepped ultrasonic horn
阶梯形变幅杆
1.
Finite element analysis of stepped ultrasonic horn;
阶梯形变幅杆的有限元分析
2.
Frequency response of stepped ultrasonic horn;
阶梯形变幅杆的频率特性分析
3.
Finite element analysis of stepped ultrasonic horn with different transitional sections;
带过渡段阶梯形变幅杆的有限元分析
4) step-bar ultrasonic transformer
阶梯形变幅杆
1.
In this paper, the effect of cross-section area ratio between the two ends of a step-bar ultrasonic transformer on its resonance frequency is studied.
文章研究了粗细端截面比对阶梯形变幅杆谐振频率的影响。
5) Stepped ultrasonic transformer
阶梯形变幅杆
1.
An experiment of resonance frequency of stepped ultrasonic transformer with unequal parts in length;
粗细端不等长阶梯形变幅杆谐振频率的实验研究
6) triangular growth step
三角形生长阶梯
1.
The results show that the triangular growth steps on the base of the ruby are developed.
研究表明,云南红宝石晶体的底面三角形生长阶梯发育。
补充资料:埃及阶梯形金字塔
佐塞尔国王约在公元前2650年至公元前2575年统治古埃及。在统治期间,他以改进技术而闻名于世。当时佐塞尔决定要人工建造一座陵墓,他要求他的建筑师和宰相伊姆霍特普来为自己设计陵墓。
伊姆霍特普设想建造一座金字塔。这是创新的陵墓形状,因为直到那时为止陵墓都是平顶长方形结构的。
佐塞尔的金字塔建在古城孟菲斯附近的塞加拉。它以六层台阶向上升起,所以被称为阶梯形金字塔。金字塔全用石头砌筑,这也是一种新的构思,因为在这之前埃及的陵墓都是用泥砖建造的。
阶梯形金字塔是埃及最早的石建筑。塔内长30米的墓道通向埋葬国王的墓穴。
其他几位埃及法老也在塞加拉建造金字塔。其中之一的乌纳斯法老是第一位在他金字塔内的墓穴墙上印刻文字的人,这些文字被称为金字塔文(丧仪祈词、颂歌和符咒等—译注),其用意是保护法老,使他死后永生。以后,埃及的法老们继续将金字塔文印刻在他们的金字塔内。
说明:补充资料仅用于学习参考,请勿用于其它任何用途。