R (EN)

字母，名词，形容词，符号

字母 “R”

1. 字母“r”的大写形式
   注册以查看例句的翻译和每个单词的单语定义。

   Rachel wrote her name with a capital R at the beginning.

名词 “R”

1. 美国共和党的缩写
   It will be Donald Trump (R) vs. Joe Biden (D).
2. 在法律语境中，它代表皇冠或政府参与法庭案件（来自拉丁文 "rex" = 国王）。
   In the case of R v Johnson, the prosecution was brought by the state.
3. 周四在学术时间表中的缩写
   My classes are scheduled for M T W R, with Thursdays being my longest day.

形容词 “R”

1. 电影分级“限制级”（未满特定年龄的儿童在无成人监督下不宜观看）
   The movie was rated R, so anyone under 17 needed an adult to accompany them.
2. “reverse”的缩写（例如在汽车中使用）
   Put the car in R for backing up.
3. 右边
   Press the R key on the controller.

符号 “R”

1. 南非兰特（南非货币）
   I exchanged my dollars for R500 to spend during my trip to South Africa.
2. 象棋中的车的象征
   R to H8 puts the opponent's king in check.
3. 伦琴（一种用于测量电离辐射量的单位）
   The X-ray machine was calibrated to emit a dose of 5 R to ensure it was safe for diagnostic use.
4. 电阻的符号（物理学中）
   You can use the formula R = V/I, where V is voltage, and I is current.
5. 有机化学中的一个未指定的基团
   In the molecule RCOOH, "R" represents any alkyl group attached to the carboxylic acid group.
6. 在遗传学中，任何嘌呤的1个字母缩写。
   In the DNA sequence, an "R" indicates the presence of either adenine or guanine at that position.
7. 生物化学中精氨酸的符号是R。
   In the protein sequence, "R" stands for arginine, an amino acid important for muscle metabolism.