| 单词 |
bichromate |
| 释义 |
bichromate Chem.|baɪˈkrəʊmət|
[see bi- prefix2 III.]
a. A salt containing two equivalents of chromic acid, e.g. the bichromate of potash, used in photography and other arts; whence biˈchromated, biˈchromatized ppl. a.
1854Scoffern in Orr's Circ. Sc. Chem. 447 Heating bichromate of potash to whiteness. 1869Echo 15 Dec., The bichromated gelatine. 1870Eng. Mech. 14 Jan. 428/3 A second bichromatised film is poured upon the first.
b. attrib., as bichromate battery or cell, a zinc-carbon cell containing an electrolyte of an acid bichromate solution.
1873Eclectic Engin. Mag. VIII. 220/1 Next, I try the bichromate battery, without porous cells; small resistance, high potential, but soon losing its power..destroying itself by a single night's action. 1875J. T. Sprague Electr. iv. 108 The bichromate cell..furnishes a most powerful current for a very short time. Ibid. 111 The cost per unit is..2·16 with the simple bichromate solution. 1886L. M. Fishback tr. Niaudet's Electric Batteries (ed. 4) viii. 213 (heading) Chemical action in the bichromate battery. 1892Daily News 25 Oct. 3/1 Casting zinc rods for the bichromate cells. |
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