This effect probably arises from a reduction in the extent of back-donation from the d-orbitals of the metal which weakens the metalcarbon bonds.是什么意思_This effect probably arises from a reduction in the extent of back-donation from the d-orbitals of the metal which weakens the metalcarbon bonds.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句