主光束 meaning in English
main beam
Examples
- The central beam and one beam on each side are used by the cd for the tracking system
主光束和两边各一个副光束被用于轨道跟踪系统。 - The central beam will be reduced in brightness because it is tracking on both land and pits
主光束亮度将降低，因为它在台和坑上进行跟踪。