angular second造句

例句与造句

1. By 1943, Heidenhain was producing linear scales with accuracy of ?15 祄 and circular scale disks with accuracy of ?3 angular seconds.
2. Such objects then call for followup with Hubble or the Rossi X-ray Timing Explorer, which can measure details in angular seconds or fractions of a second, due to different designs.
3. It's difficult to find angular second in a sentence. 用angular second造句挺难的