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- A Simplified GaAs Polarized Electron Source 自旋极化电子源装置研究
- polarized electron source 极化电子源
- The basic microscope consists of an electron source and an assembly of magnetic lenses arranged in a vertical column that is evacuated to about 10 torr or better. 基本的显微镜包括一个电子源和一块以垂直的柱形排列的磁性透镜集成板，板上排列的间隔为10托或更好。
- Longitudinally polarized electrons are the electrons with spin and momentum pointing in the same direction. 纵向极化电子，就是自旋和动量方向相同的电子。
- The two systems of government are polar opposites. 这两种政体正好相反。
- Electron source for carbon nanotube field emission 碳纳米管场发射电子源
- In the POMA all fountain electrons emitted from the specimen (electron source) on the cylinder's ooaxis will be focused behind the specimen on the axis after travelling through 180 degrees. 其主要特点是:当一次入射束垂直入射于试样表面;激发出的次生电子以喷泉状通过弯曲的轨道绕过试样;重新会聚到试样背后的对称轴上.
- To avoid this problem, an external electron source (a negative cathode or an electron gun) injects electrons into the positive flow to electrically neutralize it, which leaves the spacecraft neutral. 为避免这个问题，必须使用外部电子源（负电极或电子枪）将电子加入正离子流，使太空船维持其电中性。
- field emission array electron source 阵列场电子发射电子源
- The news comes from a reliable source. 这消息来自可靠的来源。
- The issue has polarized congress. 该争论于国会分裂。
- polarized electronic absorption spectrum 极化电子吸收谱
- Public opinion has polarized on this issue. 在这个问题上公众的意见已两极分化。
- Most insect do not live in polar region. 大多数的昆虫不在极地地区生存。
- Showing no optical activity in polarized light. 无旋光的极化光下无光学反应的
- My wages are the principal source of my income. 薪金是我收入的主要来源。
- Solar energy is a new kind of source of energy. 太阳能是一种新型能源。
- Are there any animals in the polar circles? 南极圈和北极圈内有动物存在吗？
- Finally, it proposes a method by which bibliographic metadata embedded in electronic sources could be automatically extracted when needed. 最后提出自动抽取内嵌在电子资源的书目元数据获取电子参考引文的一些设想。
- The sun is the ultimate source of energy. 太阳是能量的最基本来源。
- 今日热词
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- 深远海浮式风电平台 - deep-sea floating wind power platform
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- 京雄高速公路 - Beijing-Xiongan expressway
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- 农业及相关产业增加值 - the added value of agriculture and related industries
