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R
01
the length of a line segment between the center and circumference of a circle or sphere
02
알파벳의 18번째 글자, 라
the 18th letter of the Roman alphabet
03
방사선량(r), 방사선 단위(r)
a unit of radiation exposure; the dose of ionizing radiation that will produce 1 electrostatic unit of electricity in 1 cc of dry air
04
기체 상수, R 값
(physics) the universal constant in the gas equation: pressure times volume = R times temperature; equal to 8.3143 joules per kelvin per mole
r
01
R등급의, R 등급의
describing a motion picture that people under the age of 17 need a guardian or parent in order to watch it
