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缁冧範
1
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1
锛庝竴杩愬姩璐ㄧ偣鍦ㄦ煇鐬椂浣嶄簬鐭㈠緞
r
飦?/p>
锛?/p>
x
锛?/p>
y
锛夌殑绔偣锛屽叾閫熷害澶у皬涓猴細
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A
锛?/p>
dt
r
d
dt
dr
飦?
(B)
锛?/p>
C
锛?/p>
2
2
(D)
飪?/p>
飪?
飪?
飪?/p>
飪?/p>
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飥?/p>
飪?/p>
飪?/p>
飪?/p>
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dt
dy
dt
dx
dt
|
r
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d
飦?
锛?/p>
锛?/p>
2
锛庢煇璐ㄧ偣鐨勮繍鍔ㄦ柟绋嬩负
6
5
3
3
飥?/p>
飥?/p>
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t
t
x
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SI
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锛屽垯璇ヨ川鐐逛綔
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A
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X
杞存鏂瑰悜锛?/p>
锛?/p>
B
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X
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C
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X
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D
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X
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3
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v
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v
锛屾煇涓�娈垫椂闂村唴鐨勫钩鍧?/p>
閫熷害涓?/p>
v
飦?
锛屽钩鍧囬�熺巼涓?/p>
v
锛屽畠浠箣闂寸殑鍏崇郴蹇呭畾鏈夛細
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A
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v
|
v
|
,
v
|
v
|
飥?/p>
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B
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v
|
v
|
,
v
|
v
|
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飩?/p>
飦?
飦?/p>
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C
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v
|
v
|
,
v
|
v
|
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飦?/p>
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D
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v
|
v
|
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v
|
|
v
|
飩?/p>
飥?/p>
飦?
飦?/p>
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浜屻�佸～绌洪
1
锛庝竴鐢靛瓙鍦ㄦ煇鍙傜収绯讳腑鐨勫垵濮嬩綅缃负
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锛屽垵濮嬮�熷害涓?/p>
0
v
20
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锛屽垯鍒?
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2
锛庡湪琛ㄨ揪寮?/p>
t
r
lim
v
t
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飦?/p>
飥?/p>
飩?/p>
飦?/p>
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飦?
0
涓紝浣嶇疆鐭㈤噺鏄?/p>
锛涗綅绉荤煝閲忔槸
銆?/p>
3
锛庢湁涓�璐ㄧ偣浣滅洿绾胯繍鍔紝杩愬姩鏂圭▼涓?/p>
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2
5
.
4
3
2
SI
t
t
x
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飥?/p>
锛屽垯绗?/p>
2
绉掑唴鐨勫钩鍧囬�熷害
涓?/p>
锛涚
2
绉掓湯鐨勭灛闂撮�熷害涓?/p>
锛岀
2
绉掑唴鐨勮矾绋嬩负
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