annular scotoma

常见例句

• The annular markings on a tree indicate its age.
  樹的環形紋理顯示其年齡。
• annular scotoma ring scotoma
  環狀暗點
• It was reported that there would be an annular eclipse tomorrow.
  據報道說，明天有日環食。
• And this one scotoma also is a good luck actually.
  而這一盲點其實也是一個機遇。
• HSS-E annular cutter with weldon shank, 25mm D.O.C.
  雙削平柄系列超硬高速鋼孔鑽，切削深度25毫米.
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