同根派生 bean aphid相關(guān)詞英漢例句Studies on Yield Loss and Dynamic Economic Threshold of Cowpea Aphid Aphis craccivora Koch on Cowpea, Vigna sp.豆蚜危害豇豆損失率及動態(tài)經(jīng)濟閾值研究。bean aphid更多例句