查询词典 positron

For instance, the antimatter opposite of an electron, known as a positron, is positively charged.

例如，电子的反物质就是带正电的质子。

It is very important for the particle factories as there are strong multi bunch positron beams to be operated.

文章讨论了在北京正负电子对撞机上开展的束流光电子不稳定性实验和模拟分析研究

It shows that positron technique can\'t obtain information of O monovacany in ZnO single crystal.

单晶ZnO中的Zn单空位的正电子寿命是237ps，与文献中的230ps符合得很好。

Positron'.'' or photon was emitted.

正电子'。''或光于发射的位置。

The variation of positron annihilation parameters of Al-Li alloys with test temperature was also measured in the present investigation.

实验中还测试了Al-Li合金的正电子湮没参数随温度的变化规律。

Can be done positron emission tomography, mediastinoscopy and thoracoscopy in order to reduce unnecessary exploratory thoracotomy.

还可以做正电子发射断层显像、纵隔镜和胸腔镜检查，以减少不必要的开胸探查。

The research of positron imaging systems can be divided into two parts:imaging instrumentation and image reconstruction,which are the main interest of this thesis.

可见，正电子成像系统的相关研究可由两部分组成：成像装置的研究、图像重建的研究。本论文正是针对这两个方面。

Positron emission tomography ; drug research and development ; applicaton

正电子发射断层显像；药物研究和开发；应用

In vivo imaging of cellular proliferation in colorectal cancer using positron emission tomography.

胃粘膜癌变过程中细胞增殖活性的研究。

The interaction between hydrogen and crystal defects has been investigated by positron annihilation technique and other methods.

本论文采用正电子湮没技术和其它实验方法研究了氢与缺陷的互作用，共分以下四个部分： 1。

Finally, according to market conditions and market products this article paper analyzes the trends in the development of camera technology, and designs a color night vision camera.

最后根据市场情况和市面上产品的情况分析了摄像机技术的发展趋势，并设计了一款彩色夜视摄像机。

Only person height weeds and the fierce looks stone idles were there.

只有半人深的荒草和龇牙咧嘴的神像。