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1113023
¢Ç Rotation speed of earth at a certain lattitude[0]
208st
2018-08-31
1174
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1112146
¡à ºñÇà±â°¡ ÀÌ·úÇϱâ(take off) À§ÇÑ ÃÖ¼Ò È°ÁÖ·Î ±æÀÌ(minimum length of a airstrip) °è»ê[0]
¾î¼´Ù
2017-04-05
5255
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1