| 单词 | plan position indicator |
| 释义 | plan position indicator in American English a circular radarscope on which signals are shown at radial distances from the center, which represents the location of the transmitter plan position indicator in American Englishnoun a radarscope on which an object reflecting radar waves shows its bearing and distance from the radar detector by causing a spot of light to appear on a screen that represents a map of the area around the detector Abbreviation: PPI Word origin [1940–45]This word is first recorded in the period 1940–45. Other words that entered Englishat around the same time include: blockbuster, sealant, set-aside, snorkel, whiteout |
| 随便看 |
|
英语词典包含298861条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。