WordNet (3.0)WordNet (3.0)
(n)(astronomy) an arbitrarily fixed date that is the point in time relative to which information (as coordinates of a celestial body) is recorded, Syn.date of reference
เพิ่มคำศัพท์
ทราบความหมายของคำศัพท์นี้? กด เพื่อใส่คำนี้พร้อมความหมาย เพื่อเป็นวิทยาทานแก่ผู้ใช้ท่านอื่น ๆ
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