救命阿~~~~~~~~~~~~~
有人知道如果....
土壤的實驗...
"塑性指數"是負的..代表什麼樣的土壤性質???????????????!!!!!!!!!!!!!!!
快來解救吧~~~~~~~~~~~~~明天要交報告了~~~~~~~~
救命阿阿阿阿阿阿~~~~~~~~~~~><~~~~~~~~~~~~~
感謝...Orz
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