ӭ¼ | ע
֮ҳ
| վҳ | Ȼ | | δ֮ | ѧ | | ͼ |
| ʷ | ѧ | ѧ | | ѧ | ѧ | |
ڵλã ֮ >>  >> ѧ >>   

йؿնɵ֪ʶ

ԴN       ʱ䣺2010-10-4
 
йؿնɵ֪ʶ

 

 

նǿշֵĹ˶Ķɡ1609귢˹˶ɣյһɣԲɣÿһһԲ̫̫ԲһСյڶɣɣ̫ӵֱʱɨͬȵùʽʾΪsab=scd=sek1609꣬ɷġѧϡ1618ַ꣬˵ɣյɣͶɣһȦʱƽǸյƽȡùʽʾΪa3/t2=ka=ǹת볤t=ǹתk=1619꣬ˡĺгһ飬˵ɣдʶһdzҵõġѶⱾдˣܵĶҲǹĶġܿҪһͲŷһһҲˡշֵ˶ɸıѧ״ݻܸӵϵƲ˸˵նΪˡţٷɵ춨˻¹ѧҿ(johanneskepler)ǵѧҵڹ(tychobrahe)ѧͼ̳ˣ٤(galileo)ͬʱλˡմ۵ĸ߶϶Ըѧ˵˿ѧ֤ʹһ󲽡ֵ˶ɡıѧΪţ(isaacnewtonɵ춨˻ҲΪյߡոݵڹȱ۲µıϣβض˶о˶ɡ

 

shangwang

 

  • һ

  • һ

  • ţ˵ļį

    ϵͳ úڿ

    ѧ·ְʡhalos 

    ¥

    ѧƵ˾۱䡰ܶȽ

    ˶ʦ׼

    ǣװ

    ׵£ʹ

    ѧƽ̾

    ѧҴ̫ϵɽ

    ۲͹͸

    ȤʵΣɽ
    ѧ

    ûκͼƬ
    Ȼ
    ͨȻ[]ӡɽٶ緢ֲ ɽ
    ͨȻ[Ȼ]ѧǧƬ¼
    ͨȻ[յ]ͼɽֺơ
    ͨȻ[]ҲС1800
    [̽]ЪȪش״
    [պ]Ϊ϶½ѡ
    [պ]ս̫ս
    [պ]̫ԭǷ:췢
    δ֮
    [δ֮]F-18ս׷UFO
    [UFOɵ]ӢUFO״
    [Ȧ]˵Ļ.𺶵Ȧ
    [Ȧ]ؼʱǣ27
    ѧ
    [*ҽѧ]Life Technologiesڻ
    [*ҽѧ]ɳϾ
    [*ҽѧ]ҹԱִ
    [*ҽѧ]дԱз޸Χ
    [Ȥζ֪ʶ]Ϊʲô˯ 
    [Ȥζ֪ʶ]ʺ䡢ƷDzͬ
    [Ȥζ֪ʶ]۷ϰʲô 
    [Ȥζ֪ʶ]ԭҰ֮ұʲô 
    [ѧѧ]Υӷ
    [ѧ]ǿ糡е˶
    [Ѷ]2013ѧ 
    [Ѷ]ųӺζ
    [ҽҩ]һֵӰ쿹ҩ﹦Ч
    [ѧ]ft=mv.-mvfʲô
    Ϊҳ | ղ | ϵ | | ʹñվǰض
    Copyright © 2007 - 2011 ֮( www.kepu365.com ) Corporation, All Rights Reserved