| 释义 |
Helmholtz's theorem Helmholtz's theorem[′helm‚hōlt·səz ‚thir·əm] (electricity) Thévenin's theorem (fluid mechanics) The theorem that in the isentropic flow of a nonviscous fluid which is not subject to body forces, individual vortices always consist of the same fluid particles. (mathematics) The theorem determining a general class of vector fields as being everywhere expressible as the sum of an irrotational vector with a divergence-free vector. |