Complete classification of affine spheres with constantcrosssection curvature in 4-dimensional affine space is given.
本文给出了四维仿射空间中具有常截面曲率的仿射球的完全分类。
2
Experiments were carried out to investigate the sonic velocity of air-powder two-phase flow in a horizontal constantcrosssection duct.
实验研究了在水平等截面管道中空气-树脂粉两相流的音速。
3
The general expression for the lateral vibration frequency equations of compressed straight bars with constantcrosssection on elastic foundations is deduced in this paper.