第29卷总第403期
2011年第1期(上半月)
物null理null教null学null探null讨
JournalnullofnullPhysicsnullTeaching
Volnull29nullNonull403
(S)null1null2011nullnull35nullnull
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K1:本文就null对称法null解答物理问题作了阐述,并运用其解答竞赛试题,有一定参考意义b
1oM:对称法;竞赛题;解法
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