| 单词 | directionality |
| 释义 | directionality 1. The extent to which an optical beam is lined up with the core of an optical fiber. Collimated light beams are lined up in perfect parallel. Divergent light beams spread out as they exit the source. Light-emitting diodes (LEDs) emit the most divergent light beams, and laser diodes emit the least divergent. See also collimation, laser diode, and LED. 2. The property of a radio antenna that transmits or receives more RF signal in one direction than another. See also antenna, radio, RF, and signal. |
| 随便看 |
|
科学参考收录了5291条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。