弧秒的英文:
arcsec

参考例句:
  • One second of arc movement is one thirtieth of a millimetre.
    一弧秒的移动是一毫米的三十分之一。
  • If the diameter of the pupil is 6 mm the eye is able to separate 120 seconds of arc
    如果瞳孔直径为6毫米,人眼可分辨120弧秒。
  • Until recent years, this tilt has increased by around 6 arc seconds, or about one-fifth of a millimetre each year
    直到最近,塔身倾斜每年递增6弧秒,或约1;5毫米。
arcsec是什么意思
n. 反正割函数

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