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2.69
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È·¶¨ÏµÊý(DC): 0.399691980973541
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p1        221.195197854193
p2        -2678.6731646652
p3        12485.5284980243
p4        -26642.8692337955
p5        28849.591439777
p6        -15515.8656910972
p7        3303.82193035081
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xc        2.07107048009518
y0        19.6742851877142
a        -29.9105986848507
w        -1.22119775445542
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