| 单词 | pole strength |
| 释义 | > as lemmaspole strength pole strength n. Physics the moment of a magnetic dipole divided by the distance between the poles. ΚΠ 1890 Proc. Royal Soc. 48 344 The bars swing with but little friction, and their pole strength is sufficient to make the mutual forces quite mask the earth's directive force when they are set moderately near one another. 1935 C. J. Smith Intermediate Physics (ed. 2) v. xlix. 849 Any small change in the magnetic field causes a considerable variation in the pole strength of these pieces. 1987 Physics of Earth & Planetary Interiors 48 350 A dramatic increase in the rate of decline of the Earth's total pole strength began around 1960. < as lemmas |
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