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单词 box spanner
释义

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box spanner
box spanner n. chiefly British a spanner or wrench with a hollow polygonal head that fits over and may completely cover the nut, stopcock, etc., to be turned.
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society > occupation and work > equipment > screwdrivers, wrenches, spanners > [noun] > spanner or wrench > box-spanner
box spanner1849
box key1874
box wrench1880
1849 T. J. Main & T. Brown Marine Steam-engine iv. 127 A portable box-spanner fits this cock for the purpose of opening or shutting the orifice.
1962 Which? Apr. (Suppl.) 67/1 The Austin A60 had a grease gun, nave plate remover and box spanner.
2000 P. Vincent Mountain Bike Maintenance 11/2 The crescent-shaped jaws of the adjustable wrench are more reliable than a cheap metal box spanner.
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更新时间:2024/9/20 20:21:28