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 repeating decimal
 循環小數

 Re·peat·ing, a. Doing the same thing over again; accomplishing a given result many times in succession; as, a repeating firearm; a repeating watch.
 Repeating circle. See the Note under Circle, n., 3.
 Repeating decimal Arith., a circulating decimal. See under Decimal.
 Repeating firearm, a firearm that may be discharged many times in quick succession; especially: (a) A form of firearm so constructed that by the action of the mechanism the charges are successively introduced from a chamber containing them into the breech of the barrel, and fired. (b) A form in which the charges are held in, and discharged from, a revolving chamber at the breech of the barrel. See Revolver, and Magazine gun, under Magazine.
 Repeating instruments Astron. & Surv., instruments for observing angles, as a circle, theodolite, etc., so constructed that the angle may be measured several times in succession, and different, but successive and contiguous, portions of the graduated limb, before reading off the aggregate result, which aggregate, divided by the number of measurements, gives the angle, freed in a measure from errors of eccentricity and graduation.
 Repeating watch. See Repeater (a)
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 Dec·i·mal, n. A number expressed in the scale of tens; specifically, and almost exclusively, used as synonymous with a decimal fraction.
 Circulating decimal, or  Circulatory decimal, a decimal fraction in which the same figure, or set of figures, is constantly repeated; as, 0.354354354; -- called also recurring decimal, repeating decimal, and repetend.
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 repeating decimal
      n : a decimal with a sequence of digits that repeats itself
          indefinitely [syn: circulating decimal, recurring
          decimal]