a spanner in which the jaws form a closed ring with internal serrations that fit completely around a nut, putting pressure on all its faces.
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| 单词 | θ212431 |
| 释义 | society > occupation and work > equipment > screwdrivers, wrenches, spanners > [noun] > spanner or wrench > ring spanner (1) ring spanner1905 a spanner in which the jaws form a closed ring with internal serrations that fit completely around a nut, putting pressure on all its faces. |
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