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单词 bi-pack
释义

bi-packn.

Etymology: bi- comb. form.Previous versions of the OED give the stress as: ˈbi-pack.
In colour photography, a pack of two sensitive plates or films used to obtain colour separation.
ΘΚΠ
society > leisure > the arts > visual arts > photography > plates and films > [noun] > set of
tripack1911
bi-pack1924
1924 Brit. Jrnl. Photogr. Suppl., Sept. 35/2 The staining of the front member of a bi-pack with aniline orange.
1935 Discovery July 192/1 Using two films in the form known as ‘bi-pack’.
This entry has not yet been fully updated (first published 1933; most recently modified version published online June 2019).
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n.1924
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