| 1. | China is an earthquake active country , so the deep study of earthquake resistant behavior of asymmetric structure is of great significance 我国又是一个多地震的国家,目前仍处于地震高发期,因而结构抗震性能的研究具有重要意义。 |
| 2. | Especially aiming at the asymmetric structure of the cast , the allocation of aluminous liquid during the filling process was presented and the concept of structure mass fraction was inducted 针对铸件的不对称结构提出了充型过程中铝液的分配问题,引入结构质量分数的概念。 |
| 3. | Moreover , for asymmetric structure by the horizontal axis , when the annular cable is horizontal , the same scale of the two parts ( upward and downward ) of all masts must be satisfied 并证明对于沿水平轴不对称的结构,当环索水平时,各桅杆被水平轴划分的上下部分必须满足同样的比例关系。 |
| 4. | The main results can be summarized as the folio wings : in the certain parameter range , the circular shearing basic flow might be able to axisymmetrize the one - wave asymmetric structure of a typhoon and also to transfer the perturbation vorticity in the outer region inwards 主要结果可以归纳如下:在一定的参数范围,圆形切变基流可以使初始一波非对称结构轴对称化,也可以使外区的扰动涡量向内传播。 |
| 5. | The compounds with symmetric structure and different size crown ether rings , 16 and 18 , have higher tm and tj than those of the compounds 17 with the asymmetric structure . the tm and ti of compounds 18 is higher than the compounds 16 含有对称结构和不同大小冠醚环的化合物, 16和18 ,它们的熔点和液晶态的清亮点高于含有不对称冠醚环的化合物17 ,且化合物18的熔点和液晶态的清亮点也高于化合物16的熔点和清亮点。 |
| 6. | Incorporating with the model static and dynamic finite - element seismic analysis of a asymmetric structure in plan and elevation , the paper gives the earthquake resistant of such structure , and also establishes a foundation for further research and provides a reasonable design guidelines 本文结合一平面有偏心、立面多次收进的不规则高层钢筋混凝土框?剪结构的有限元静力和动力分析,对这种不规则高层建筑结构的动力特性及地震时的受力情况作了具体的研究分析。 |