天国使者7 发表于 2013-12-17 11:34 
8 r v, H, a: W9 K# h( q真行啊,不过最值如何求呢?
& N4 ~+ e+ H9 E' h大侠,帮我看下,/ ^$ O6 H9 s: Y( w; P( D/ q* w4 p
此时,曲柄成67.26°时,是否出力最大?
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# \4 A' Z9 w% F/ m此时,曲柄成15.65°时,出力最小?
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