| 单词 | arcsec |
| 例句 | How close to Uranus would a spacecraft have to get to obtain the same resolution as in Example 12.1 with a camera that has an angular resolution of 2 arcsec? Astronomy 2016-10-13T00:00:00Z Photon events from the afterglow were selected using a circular extraction region of radius 1 arcsec, while the background level of 2.3 × 10−6 counts arcsec−2 s−1 was estimated from nearby source-free regions. The X-ray counterpart to the gravitational-wave event GW170817 : Nature : Nature Research 2017-10-15T04:00:00Z Einstein calculated from general relativity theory that starlight just grazing the Sun’s surface should be deflected by an angle of 1.75 arcsec. Astronomy 2016-10-13T00:00:00Z |
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