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word
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24.4
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闄勫弬鑰冪瓟妗?/p>
鐭ヨ瘑鐐?/p>
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1
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鍏稿瀷渚嬮
1
锛庡凡鐭ュ渾閿ョ殑楂樻槸
cm
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50
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.
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2000
飦?/p>
cm
2
锛?/p>
2.
锛?/p>
2010
骞寸寤虹渷鏅嬫睙甯傦級
宸茬煡锛氬鍥撅紝鏈変竴鍧楀惈
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鐨勭洿瑙掕竟闀?/p>
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鐩磋鍧愭爣绯讳腑锛屼笖
3
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.
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鑻ュ弻鏇茬嚎鐨勪竴涓垎鏀伆濂界粡杩囩偣
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鑻ユ妸鍚?/p>
飩?/p>
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鐨勭洿瑙掍笁瑙掓澘缁曠偣
O
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鎭板ソ涓?/p>
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杞撮噸鍙狅紝
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A
钀藉湪鐐?/p>
A
飩?/p>
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).
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Rt
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飩?/p>
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3
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飪?/p>
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,
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飥?/p>
0
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k
x
k
y
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3
3
k
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3
9
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k
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y
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Rt
飦?/p>
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飥?/p>
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AOB
锛?/p>
3
飥?/p>
AB
锛?/p>
OA
AB
AOB
飥?
飪?/p>
sin
锛?/p>
OA
3
30
sin
飥?/p>
飩?/p>
锛?/p>
鈭?/p>
6
飥?/p>
OA
.
A
O
B
C
D
A
鈥?/p>
x
y
A
O
B
C
D
A
鈥?/p>
x
y