冥王星距离地球大约590亿千米，若一艘宇宙飞船以5×(10的4次方)km/h的速度从地球出发飞向冥
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绛旓細鍐ョ帇鏄熻窛绂诲湴鐞冨ぇ绾590浜垮崈绫,鑻ヤ竴鑹樺畤瀹欓鑸逛互5脳(10鐨4娆℃柟)km/h鐨勯熷害浠庡湴鐞冨嚭鍙戦鍚戝啣 鍐ョ帇鏄熻窛绂诲湴鐞冨ぇ绾590浜垮崈绫,鑻ヤ竴鑹樺畤瀹欓鑸逛互5脳(10鐨4娆℃柟)km/h鐨勯熷害浠庡湴鐞冨嚭鍙戦鍚戝啣鐜嬫槦,鍒欒瀹囧畽椋炶埞澶х害闇瑕佸灏戝勾椋炲埌鍐ョ帇鏄(涓骞磋鍋365澶)... 鍐ョ帇鏄熻窛绂诲湴鐞冨ぇ绾590浜垮崈绫,鑻ヤ竴鑹樺畤瀹欓鑸逛互5脳(10鐨4...
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