In this paper, the authors discuss the submanifolds with constant scalar curvature in a locally symmetric and conformally flat space, and obtain some intrinsic rigidity theorems.
该文研究了局部对称共形平坦空间中具有常数量曲率的紧致子流形，证明了这类子流形的某些内蕴刚性定理。
But for factory structures under great equipment loads, the space work is shown more or less especially when every horizontal frame is different in rigidity.
但是，对于承受一些特定的较大设备荷载的厂房结构，特别是各榀横向平面框架的刚度不同时，在竖向荷载作用下的空间作用有一定的体现。
In order to make reflectors of the space remote sensor keep both high rigidity of structure and fine stability of thermal dimension, a kind of flexible cone-shaped sheath is designed.
针对空间光学遥感器反射镜结构刚度高、热尺寸稳定性差的状况，设计了一种柔性锥套结构，它在保持结构刚度满足力学要求的同时，使反射镜具有良好的热尺寸稳定性。
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