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单词 fan draught
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fan draught
fan draught n. a system of supplying air in boiler furnaces by means of mechanically driven fans.
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society > occupation and work > equipment > machine > machines which impart power > boiler > [noun] > supply of water or air to
feed-water1862
fan draught1894
make-up1930
1894 W. H. White Man. Naval Archit. (ed. 3) xiv. 561 Fan draught is also of great value under unfavourable conditions, such as hot weather, calms, or following winds.
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