英语语法分析

The polarization eigcnfrequencies of symmetric and unsymmetric quantum well are given.

以及对称和非对称量子阱中面声子的色散曲线。

The QSS converter model in account of unsymmetric commutating voltages is developed for DC system.

对直流系统开发了计及换相电压不对称的QSS换流器模型。

Recent advance in research on unsymmetric squarine is reviewed, including their synthetic methods, properties and applications.

综述了不对称方酸菁的合成、 中间体的制备、光谱、光导性能以及应用研究。