| 单词 | pole face |
| 释义 | > as lemmaspole face pole face n. Physics either of the two surfaces of a magnet where a pole appears to be located and where there is a high concentration of flux lines. ΚΠ 1849 M. Faraday in Philos. Trans. (Royal Soc.) 139 4 If.. a perfectly uniform field should be required, it could easily be made by making the form of the pole face somewhat convex, and rounded at the edges more or less. 1912 Times Engin. Suppl. 18 Sept. 18/3 The wire specimen was attached at its lower end to an armature which vibrated above the pole-face of the magnet. 2002 F. Close et al. Particle Odyssey vi. 96 The principle behind strong focusing is to shape the magnet pole faces so that they guide a deviant particle quickly back towards the middle of the vacuum chamber. < as lemmas |
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