主群 master group
- 本文对新近研制的一种载波主群信号编码设备作技术介绍。
This paper gives a technical introduction ot a newly developed equipment for FDM master-group signal encoding. - 上面是曝光时间是20分钟的照片,在狮子座流星主群出现之前。
This photograph is a 20-minute exposure ending just before the main Leonids peak began. - 说到睿智的声音,能够成为连线科学版的博主群中的一员,我非常激动。
Speaking of smart voices, I'm absolutely thrilled to be part of the new network of bloggers here at Wired Science.
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