 |
| |||
| Astron n (unit of stellar distance); Makron m (unit of stellar distance); Metron n (unit of stellar distance); Parsec n (unit of stellar distance); Parsek m (unit of stellar distance); Sternweite f (unit of stellar distance) | |||
| Parsek m | |||
| Parsec n | |||
| 英语 词库 | |||
| |||
| parallax second | |||
| pc | |||
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| parser and extensible compiler | |||
|
parsec : 3 短语, 1 学科 |
| 天文学 | 3 |