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Pattern of protoxylem and metaxylem arrangement changes in the transition zone http://www.cas.muohio.edu/~meicenrd/ANATOMY/Ch9_Transport/f17.16.jpg
就參考看看吧.... -- -- ※ 發信站: 批踢踢實業坊(ptt.cc) ◆ From: 218.160.178.31