农业机械学45

农&au - 1 2 3 4 5 6 1 a=3~6cm R=30~65N 2 V a=4~8cm R=80~160N

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This note was uploaded on 01/30/2012 for the course AGRICULTUR agricultur taught by Professor Tinglina during the Summer '07 term at Nanjing University.

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农&au - 1 2 3 4 5 6 1 a=3~6cm R=30~65N 2 V a=4~8cm R=80~160N

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