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单词 bullion-point
释义

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bullion-point
bullion-point n. the point or end of a bulb that is being worked on a blowpipe; also, the thick centre of a disc of blown glass, the bull's-eye.
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society > occupation and work > materials > derived or manufactured material > glass and glass-like materials > [noun] > glass > marks or imperfections in
thread1593
streak1807
seed1821
stripe1823
bull's-eye1832
stria1832
tear1832
bullion1834
wreath1839
sand-hole1867
bullion-point1881
pontil mark1923
oil spot1962
saliva1969
society > occupation and work > materials > derived or manufactured material > glass and glass-like materials > [noun] > glass > molten glass
parison1832
bullion-point1881
gob1907
gathering1908
gather1934
1881*Bullion-point [see sense 2].
a1884 E. H. Knight Pract. Dict. Mech. Suppl. 145/1 Bullion Point (glass), the thick portion at the center of a disk of crown glass.
1890 W. J. Gordon Foundry 143 The globe is heated and again blown, and becomes a Florence flask, the ‘bullion-point’, the apex of the old cone, being still conspicuous.
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更新时间:2024/11/10 16:06:39