كسارة الفك على الفحم في اندونيسيا. puzzylona كسارة الفك, Parsec Wikipedia The parsec (symbol: pc) is a unit of length used to measure the large distances to astronomical objects outside the Solar SystemOne parsec is approximately equal to 31 trillion kilometres (31 × 10 13 km), 19 trillion miles (19 × 10 13 mi), or 206,265 astronomical units (au), and ...
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