查询词典 valence electron

Knowledge and skills: understand the core idea of valence shell electron pairs repulsion theory; can use the theory to determine the shapes of some simple molecules.

知识与技能：理解价电子对互斥理论，能在理论的指导下确定一些小分子的形状。

Process and Methods: require students to built models by themselves; use and understand the valence shell electron pairs repulsion theory when building models; cultivate students to analyze issues and problem-solving abilities.

过程与方法：要求学生自己建立分子形状的模型，在建立模型的时候理解和运用价电子对互斥理论，培养学生的分析问题能力和解决问题的能力。

The association defect formed by donor and acceptor was the obstacle of the electromigration of the Oxygen vacancy and the electron. The valence variation of MnO〓 during the sintering and reoxidation process can improve the insulation resistance effectively.

要发挥MgO受主掺杂的作用，同时要避免氧空位的增加。Y〓和Dy〓作为两性离子掺杂，减少了氧空位，产生的施主和受主相互缔合，成为氧空位和电子迁移的障碍。

It was found that the DAPS shift of La was associated with 4f energy change under the influence of 3d hole-4f electron interaction, and with the change of polarization energy, while the change in DAPS line shape of Ce reflected its valence fluctuation.

并发现La的DAPS峰位的移动主要和3d空穴-4f电子互作用下的4f能级变化有关，另外还和极化能的变化有关。而Ce的DAPS峰形的变化可以反映Ce特有的化合价涨落现象。这一工作深化了对稀土DAPS的认识，有利于APS在以后的稀土研究中的应用。

VARIATION IN L, M, N INNER-SHELL ELECTRON BINDING ENERGIES OF RARE-EARTH ELEMENTS IN VALENCE TRANSITION

变价稀土元素L，M，N内壳层电子束缚能量的变化

Optical absorptions for a semiconductor or insulator arise through electron transfers from the valence band to the conduction band.

光学吸收为半导体或绝缘体出现通过电子转移从价带至导带。

Further more, the simplified analysis method on stressed-skin effect of corrugated steel sheet is also discussed in detail.

此外还比较详细地探讨了蒙皮效应的简化分析方法。

If I had known her telephone number,I would have called her.

要是我知道她的电话号码，我就打电话给她了。