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单词 guard-plate
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guard-plate
guard-plate n. (a) (in an electrometer) = guard-ring n.; (b) ‘the plate which closes the opening in front of a cupola furnace, to whose iron casing it is attached by staples’ (1875 E. H. Knight Pract. Dict. Mech.).
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the world > matter > physics > electromagnetic radiation > electricity > [noun] > measurement of > instrument for > part of
guard-ring1817
guard-plate1873
guard tube1892
1873 J. C. Maxwell Treat. Electr. & Magn. §201 The interval between the disk and the guard-plate may be regarded as a circular groove of infinite depth.
extracted from guardn.
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更新时间:2025/3/4 17:59:22