(a) a principal pipe carrying water or gas vertically up through a building or a mine; (b) an electricity main passing from one floor of a…
| 单词 | θ77931 |
| 释义 | the world > matter > physics > electromagnetic radiation > electricity > electrical power, electricity > distribution system > [noun] > cable > supplying the public > inside building (2) rising main1804 (a) a principal pipe carrying water or gas vertically up through a building or a mine; (b) an electricity main passing from one floor of a… riser1898 Building. = rising main n. (b) at rising, adj. compounds 2. |
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