thermionics是什么意思

用法例句

Some Theoretic and Technical Problems on Ion Chemical Heat Treatment;

离子化学热处理的若干理论和技术问题

The analyzed results are that the contribution of the thermionic polarization to the electron emission is bigger than that of the dipole orientation polarization,thus two methods for improving the electron emission can be obtained.

运用电子发射的极化反转机理,在以上动态特性分析结果的基础上,研究电子发射与极化之间存在的关系,得出转向极化对电子发射的贡献大,热离子极化对电子发射贡献小的结论。