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单词 pole-finding paper
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pole-finding paper
pole-finding paper n. impregnated paper which can be used to identify the sign of an electric terminal or the like by the change of colour it undergoes when brought into contact with the terminal.
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the world > matter > physics > electromagnetic radiation > electricity > electric polarization > [noun] > pole > means of identifying
pole-finding paper1902
1902 J. E. Hutton in A. C. Harmsworth et al. Motors & Motor-driving (Badminton Libr. of Sports & Pastimes) viii. 145 ‘Pole-finding’ paper may also be used for this purpose.
1963 G. M. B. Dobson Exploring Atmosphere v. 84 These instruments recorded on ‘pole-finding’ paper the sign of the electric current flowing through a long wire hanging from the balloon.
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更新时间:2024/11/11 5:31:15