R

单词音标

R音标[ɑ:(r)]

汉语翻译

【计】 半径, 比例, 读, 接收, 寄存器, 复位, 电阻, 程式

词型变化

名词复数:r\'s

英语解释

名词 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

同义词：roentgen

(physics) the universal constant in the gas equation: pressure times volume = R times temperature; equal to 8.3143 joules per kelvin per mole

同义词：gas constant, universal gas constant

the 18th letter of the Roman alphabet

同义词：letter r

the length of a line segment between the center and circumference of a circle or sphere

同义词：radius

例句

The trilled `r\' is produced by vibrating the tongue against the upper teeth.

发带颤音的r，舌抬向上齿颤动而成。

详细解释

r 或 R

n.（名词）

【复数】 r`s 或 R`s

The 8th letter of the modern English alphabet.

字母R：现代英语字母表中的第十八个字母

Any of the speech sounds represented by the letterr.

R的读音：由字母r 所代表的读音

The 8th in a series.

序列中的第十八

r

r 2

abbr.（略语）

Or R Mathematics Radius.

或 R 【数学】 Radius.

Or R Electricity Resistance.

或 R 【电学】 Resistance.

Or r. Baseball Run.

或 r. 【棒球】 Run.