bl date 中文意思是什麼
bl date
解釋
提單日期-
After that, we give the up - to - date observational characters of bl lac objects in different aspects, for example, optical variability, polarization, and so on
在簡要介紹bllac天體的基本性質后,又重點詳述了bllac天體的各種觀測性質及相應特徵。
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