| 单词 | trolley-wheel |
| 释义 | > as lemmastrolley-wheel trolley-wheel n. = sense 3. ΘΚΠ the world > matter > physics > electromagnetic radiation > electricity > transmission of electricity, conduction > conductor used in transport > [noun] > conductor of current from wires trolley1891 trolley-wheel1891 bow trolley1901 pantograph1907 bow1909 1891 Pall Mall Gaz. 30 Oct. 6/2 A small grooved ‘trolley wheel’..runs against the under side of the overhead wire. < as lemmas |
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