| 1. | The atom is made up of a nucleus with negative electrons revolving around it
原子是由原子核和绕核旋转的若干负电子组成。 |
| 2. | Electron emission characteristics have been investigated for amorphous diamond films with low or even negative electron affinity
摘要利用阴极电弧法分别在矽基板及镀有一层钐金属的矽基板上沉积非晶钻石。 |
| 3. | We have shown that it is possible to create a radioactivity characterized by the emission of positive or negative electrons in boron and magnesium , by bombardment with alpha rays
我们已经展示了人工放射现象的可能性，这种放射现象的特征是用以射线轰击用咄硼和镁中的正电子或负电子。 |
| 4. | The combination of negative electron affinity ( nea ) photocathode and micro channel plate ( mcp ) brings the iii image intensifier . because of its high performance , the iii image intensifier has been developed rapidly and used widely in the short several decades after it had been found
负电子亲和势( nea )光电阴极和微通道板( mcp )的结合产生了三代像增强器，由于这类像增强器具有优良性能，在发现后的短短数十年中获得了迅猛发展和广泛应用。 |
| 5. | Based on the energy band characteristics of ordinary negative electron affinity emitter gaas , the design of lengthening the diffusion lengths of negative electron affinity emitter gaas was presented , and the special negative electron affinity emitter gaas was designed
摘要根据通常负电子亲和势二次电子发射材料砷化镓的能级特点，提出延长负电子亲和势二次电子发射材料砷化镓的逸出深度的理论设计，设计出了特殊的负电子亲和势二次电子发射材料砷化镓。 |
