2011机械波坐标系类

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3、-4y/cmP246y/cmx/mOx/cmP0图2800.10.20t/sy/cm图(b)－220.3240x/my/cm图(a)－22v/m·s-1159130x/cmy/cm图844t/sv432187650-v图2EABCvssvAxvs图2x/m0.40.2-50My/cmab10Ot/s5－101234y/mx/m48120.5－0.50P图甲AＢTSlt/sy/m0.51.01.50.5－0.50图乙x/mx/mt/sy/m0.51.00.5－0.50图乙y/m48120.5－0.50P图甲0x/my/cmx/my/cm1

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5、/mAU/V0.400.900.800.700.500.600.600.500.400.800.70yxP1P2P3OF(N)v(m/s)01012864216128204图24