这可以理解为因为氧化作用失去电子后，剩下电子收到原子核的吸引作用增强，电子结合能增强；反之，还原作用得到电子，所有电子收到的吸引减弱，结合能减弱。 You could down load just the transcript through the World wide web portal. Click on Recordings with the remaining menu, Identify the recording and click about the download icon. You'll get the subsequent alternatives: 这并不代表作者没有自己... https://tripsbookmarks.com/story20403415/the-smart-trick-of-smokes-delight-that-no-one-is-discussing