循环小数

[经] 循环小数

[ noun ]
a decimal with a sequence of digits that repeats itself indefinitely
<noun.quantity>

Repeating \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)

Decimal \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}.