The electron source may emit electrons either via field emission or thermionic emission.

该电子源可经由场发射或热离子发射来发射电子。

The thermionic emission cooling employing hetero structure is a high efficient cooling method.

基于异质结结构热电子发射的热电制冷，是近年来提出的一种高效制冷方法。

Emission spectroscopic techniques are employed to study the loss of thermionic emission material barium from the cathode of a T12 fluorescent lamp.

应用发射光谱技术研究了T12荧光灯阴极电子发射材料钡的损失。

Based on the thermionic emission theory of the current density of4h-sic schottky barrier diodes under the forward bias the calculations for the schottky barrier height?

在分析4hsic肖特基势垒二极管正向电流热电子发射理论的基础上，计算了肖特基势垒高度？

Finally, our simulation result shows that conventional SOI SBSD-MOSFET can effectively suppress thermionic emission leakage current, but it still can not suppress tunneling leakage current.

最后，我们的模拟发现，普通soi结构SBSD - MOSFET能有效阻挡来自源结的热电子发射泄漏电流，但仍不能阻挡来自漏结的隧穿泄漏电流。

For this purpose, several kinds of laser-driven photocathodes, and some thermionic cathodes and field emission cathodes are applied.

为此，人们采用各种类型的激光驱动光电阴极、一些热阴极和场致发射阴极作为电子源。

Alternately, electron emission may be by thermionic means.

可选地，电子发射可以通过热离子装置。