平面波与球面波的差别是,The difference between a plane wave and a spherical wave is,A.平面波同一组波线穿过的面积不相等,球面波同一组波线穿过的面积不相等;The area of a plane wave through the same set of wave lines is not equal, and the area of a spherica
The mutation of a pile’s internal force easily occurs in the interface between soft and hard soil. It is difficult for experiments to reflect the real site soil properties, the self-weight stress of the soil and the structure, and the interaction between the piles and soil, and these ...
Feature Construction and Extraction As can be seen from Figure 2, with the increase of compression times, the AAC audio scale factor will be relatively reduced. With this property, the difference between the audio recompressed audio and the original audio scale factor is used as a feature for ...