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123吳豆豆木蟲(chóng) (著名寫(xiě)手)
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[求助]
求把這兩句話翻譯成漢語(yǔ)
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This low-field shift is compatible with the existence of a hydrogen bonding to the carbonyl group of the ester, and the large vicinal coupling is consistent with a trans-periplanar relationship between the vicinal hydrogens. The lack of formation of the 1,2-hygrogen migration product which is frequently formed in the Lewis acid-catalyzed azirination renders support to the cat-ion radical mechanism. |
至尊木蟲(chóng) (知名作家)
禁蟲(chóng) (文壇精英)
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