jigging
簸析法; 跳汰選; 跳汰選礦法
Jig, v. t. [imp. & p. p. Jigged p. pr. & vb. n. Jigging ]
1. To sing to the tune of a jig.
Jig off a tune at the tongue's end. --Shak.
2. To trick or cheat; to cajole; to delude.
3. Mining To sort or separate, as ore in a jigger or sieve. See Jigging, n.
4. Metal Working To cut or form, as a piece of metal, in a jigging machine.
Jig·ging n. Mining The act or using a jig; the act of separating ore with a jigger, or wire-bottomed sieve, which is moved up and down in water.
Jigging machine. (a) Mining A machine for separating ore by the process of jigging. (b) Metal Working A machine with a rotary milling cutter and a template by which the action of the cutter is guided or limited; -- used for forming the profile of an irregularly shaped piece; a profiling machine.
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jig
n 1: music in three-four time for dancing a jig
2: any of various old rustic dances involving kicking and
leaping
v : dance a quick dance with leaping and kicking motions
[also: jigging, jigged]