(a) a finger ring worn to keep another from slipping off; a keeper; (b) (see quot. 1893 at sense 7b).
| 单词 | θ78012 |
| 释义 | the world > matter > physics > electromagnetic radiation > electricity > [noun] > measurement of > instrument for > part of (3) guard-ring1817 (a) a finger ring worn to keep another from slipping off; a keeper; (b) (see quot. 1893 at sense 7b). guard-plate1873 (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… guard tube1892 (a) (see quot. 1893 at sense 7b; (b) a cylindrical conductor surrounding part of a wire anode (in an ionization chamber or proportional counter)… |
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