Electrical Engineering. A transverse board used in laying overhead telegraph lines and power lines, which as it is pulled along simultaneously draws…
| 单词 | θ77948 |
| 释义 | the world > matter > physics > electromagnetic radiation > electricity > electrical power, electricity > distribution system > [noun] > variation of position > positioning device (1) running-board1893 Electrical Engineering. A transverse board used in laying overhead telegraph lines and power lines, which as it is pulled along simultaneously draws… |
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