| 释义 |
critical field critical field[′krid·ə·kəl ′fēld] (electronics) The smallest theoretical value of steady magnetic flux density that would prevent an electron emitted from the cathode of a magnetron at zero velocity from reaching the anode. Also known as cutoff field. (solid-state physics) The magnetic field strength below which magnetic flux is excluded from a type I superconductor. Symbolized Hc. |