查询词典 charge density

To attaining longlived charge separated states, the new compounds 7 and 8 of C60-S-2-thioxo-1, 3-dithioles derivatives were synthesized by Diels-Alder cycloaddition reaction. The structures generated by AM1 were used as the initial configurations for the density functional optimization at the B3LYP/3-21G level for all carbon and sulfur clusters, and some geometry conformation indexes were obtained. We found that C60 has been half-packed by the curved 2-thioxo-1, 3-dithioles derivatives.

为了获得具有长寿命电荷分离态的[60]富勒烯－富硫衍生物有机功能分子，我们设计了用单键硫桥键联[60]富勒烯和硫酮衍生物的分子7和8，用半经验AM1方法得出最低能量的几何结构，在此基础上用密度泛函 B3LYP/3-21G方法，对其进行计算，得出电子相关的优化参数，预测其稳定性。

Department of Engineering Mechanics , Tsinghua University , Beijing 100084 , ChinaAbstract :In this paper , the loading model and energy release of a low density explosive charge in liquid con2

对贮液容器内部低速炸药爆炸载荷模型的选取及其能量释放的分析进行了研究。

It was clear that the Cherenkov radiation is result of the coupling between the slow TM mode propagated along the waveguide and the negative-energy space-charge mode propagated along the beam, and the coupling strength is proportional to the beam density.

分析结果表明：切伦科夫辐射是由沿介质同轴波导传播的慢波与沿薄环形相对论电子注传播的负能空间电荷波耦合所致，且其耦合强度与电子注的密度成正比；输出频率和波增长率随着填充等离子体密度的增大而提高；保持一定的输出频率，增大电子注的束流可得到高的微波输出功率。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。