
 Based on the above-mentioned equivalent proposition,the classical theorem further pointedout that because the reintroduced vector field w(8. 3.1) is with neither divergence norrotation,the field could be preliminarily defined as a potential field. Or ther (共 1918 字) [阅读本文] >>


说明: 本文档由创作者上传发布,版权归属创作者。若内容存在侵权,请点击