The features of local shock wave solution without gaseous self-gravitation are similar qualitatively but different quantitatively with the results of this paper.
与非自洽的局部激波解相比，两者的定性特征相似，但定量结果有较大差别。
2
The features of shock wave can be analyzed qualitatively in the velocity plane for a special perturbed gravitation which is used to simulate the self-gravitation of interstellar gas.
对一种特定的扰动引力场模拟气体自引力，可以在速度平面上定性分析激波解的特性。
3
Tn this paper, the galactic spiral structure is studied by the galactic shock wave of interstellar gas with self-gravitation. The perturbed gravitation of stars is not ?