| 1. | Dynamic behavior and buckling analysis of thin rectangular plate rotating around its symmetrical axis 轴对称匀速转动状态下矩形薄板的动态特性与屈曲分析 |
| 2. | ( 5 ) a fingerprint classification method based on singular points and central symmetrical axis is presented and realized ( 5 )给出并实现了基于奇异点和指纹中心对称轴的指纹分类方法。 |
| 3. | If sufficient singular points can be extracted from fingerprint image , then classify fingerprint mainly based on singular points . otherwise classify fingerprint based on central symmetrical axis 如果能提取出足够的奇异点,则主要根据奇异点进行分类,否则利用指纹中心对称轴进行分类。 |
| 4. | Simplified theories are also presented for curved beams with commonly used sections , such as i - shape , channel and h section without any symmetrical axis . linear analysis is also performed in combination with finite element method 其后就常见的截面形式(单轴对称工字形、槽形和无对称轴的形截面) ,对所提出的曲梁理论进行简化,并结合有限元方法求解曲梁的线性问题。 |
| 5. | They can be found in circular cast houses of blast furnace , in oil - sealed dry gasholders and in workshops with curved cranes . cross sections of these curved members are of various types , such as il - shaped , i - shaped , channel , box and h section without any symmetrical axis 曲线梁在工业和民用建筑中也常有应用,在高炉环形出铁场、干式煤气柜内部结构以及某些有工艺要求的厂房内,常需采用不同截面形式的环形曲梁。 |
| 6. | The strength of convergent shock was enhanced in cylindrical and spherical geometries than in planar geometry . the bubble became more wide and big and the spike became more narrow and long . it showed in spherical implosion that the spike close to the symmetrical axis grew faster than the ring one away from the symmetrical axis 第四,利用lared一s程序模拟柱和球几何内爆过程中rt不稳定性增长,表明收缩几何效应对内爆过程中不稳定性的增长有重要影响,柱和球几何中聚心冲击波的强度大于平面情况,气泡变得更加宽而大,而尖顶变得更加细而长。 |
| 7. | Based on the research of influenced parameters on constant and varying depth solid web box girder before , the shear lag aroused by the parameters including width - span ratio , outstanding flange on base slab and the position of the tendons are further studied . the investigation show that shear lag values diminish along with the decease of width - span ratio and the departure from the symmetrical axis of anchor position , but outstanding flange is contrary to the former 在前人对等截面、变截面实腹箱梁剪力滞效应影响参数研究的基础上,本文进一步对腹板开孔的连续箱梁的宽跨比、底板翼缘伸出以及预应力锚固位置改变等参数对箱梁剪力滞的影响进行研究。 |