The paper introduces the application, main alteration plan and the setting of relational parameters of technique of alternating current frequency conversion in Longmen planer′s electrical alteration.

介绍交流变频调速技术在龙门刨床电气改造中的应用和总体改造方案及有关参数的设置。

youdao

So we end up with 3 s p 2 hybrid orbitals, so we can think about what would happen here in terms of bonding, and if we think about how to get our bonds as far away as possible from each other, what we're going to have is the trigonal planer situation.

因为现在sp2轨道有1/3的s特征，2/3的p特征，而不是3/4。,我们最后得到3个sp2杂化轨道，我们可以想象,成键时会发生什么，如果我们考虑。

麻省理工公开课 - 化学原理课程节选