单词 | electrophorus |
释义 | electrophorus [i´lek`trä·fǝ·rǝs] ELECTRICITY A device used to produce electric charges; it consists of a hard-rubber disk, which is negatively charged by rubbing with fur, and a metal plate, held by an insulating handle, which is placed on the disk; the plate is then touched with a grounded conductor, so that negative charge is removed and the plate has net positive charge. |
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