单词	hour angle
释义	hour angle noun : the angle between the celestial meridian of an observer and the hour circle of a celestial object measured westward from the meridian Word History First Known Use circa 1837, in the meaning defined above
随便看	check stopper check system check that check through check up on check valve check viewer check washer check weave check-in check/take/feel someone's pulse checkable checkage checkbook checkbook journalism checkbook money checkbooks checkbox checkboxes checkdown checkdowns checked checked (off) checked (out) checked back

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