The atom at the tip of the chain emitted electrons onto a surrounding phosphor screen, rendering an image of the electron cloud around the nucleus.
碳链末端的原子发射电子到周围的磷光屏，得到原子核周围电子云的图像。
The study result shows that the planar film structure is conformable for FEE cathode, because it has low voltage threshold and small range of energy distribution of the emitted electrons.
分析结果表明，宽带隙平面薄膜结构用作场致电子发射阴极，具有发射电压的阈值低，发射电子的能量分布范围小等优点。
Photocell: or photoelectric cell, or electric eye; Solid-state device with a photosensitive cathode that emits electrons when illuminated and an anode for collecting the emitted electrons.
光电管：一种固体探测器，有一个对光灵敏的阴极，受到光照时能发射电子，还有一个用于收集所发射电子的阳极。
These quasar jets are formed when electrons emitted from a black hole impact with cosmic background radiation left by the big bang, giving astronomers clues about the conditions in the early universe.
这些类星体的河外星系是由当黑洞所发射的电子与大爆炸所遗留下来的宇宙背景辐射碰撞后所形成的，它为天文学家提供了关于早期宇宙的线索。
The electrons forming the image must be emitted by the specimen to be observed .
构成物象的电子必须由要观察的样品发射。
The cyclotron radiation emitted from electrons in cyclotron motion under influences of the electromagnetic field is investigated.
本文研究的回旋辐射是由于在激光强场影响下的电子回旋运动产生的。
At present a large number of researches indicate that the surface of metal material while the crack forms, can be emitted massive low energy electrons.
目前大量研究表明，金属材料在裂纹形成过程中，表面会发射大量的低能电子。
Because emitted phonons carry only little energy, multiple scattering processes is needed for electrons and phonons to reach thermal equilibrium.
由于辐射声子携带能量很少，需要多次散射过程使得电、声子趋于热平衡。
Based on the photoelectric effect, when a beam of monochromatized radiation is shined on a sample, electrons are emitted and escape to the vacuum (Fig. 1).
利用光电效应的原理，我们用深紫外光照射样品，并探测出射的光电子（图一）。
Based on the photoelectric effect, when a beam of monochromatized radiation is shined on a sample, electrons are emitted and escape to the vacuum (Fig. 1).
利用光电效应的原理，我们用深紫外光照射样品，并探测出射的光电子（图一）。
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