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- Monoenergetic positrons 慢正电子
- An electron with a negative charge, as contrasted with a positron. 电子带有负电荷，与正电荷相反的电子
- Positron is how it was detected by ? 正电子是如何被检测出来的呢？
- The antielectron, or positron, was discovered in 1932. 反电子或正电子,是在1932年被发现。
- To participate in annihilation, as do an electron and a positron. 湮灭，湮没湮灭，如电子与正电子
- To participate in annihilation,as do an electron and a positron. 湮灭，湮没湮灭，如电子与正电子
- An electron with a negative charge,as contrasted with a positron. 电子带有负电荷，与正电荷相反的电子
- This creates, as it were, electron and positron shadows. 这样也就有了电子和正电子的阴影。
- The experiments at CERN use the isotope sodium 22 as their source of positrons. CERN的实验以同位素钠22为正子源。
- The Berkeley experiments have already shown that such channels generate monoenergetic electron beams. 柏克莱的实验已经证明，这种通道可以产生单一能量的电子束。
- The result is that the electron shadow and the positron shadow are separated. 结果将使得电子的阴影和正电子的阴影被分开。
- The vacancy defects of samples were measured by slow positron annihilation. 借助慢正电子湮没技术研究了样品的空位型缺陷。
- Shimano introduced Positron indexed shifting for low-priced bicycles in 1977. 禧玛诺介绍了正电子索引的低价自行车在1977年转移。
- Monoenergetic K-alpha x-ray, x-ray laser et al can emit from interaction of ultra-short and ultra-intense laser pulse with matter. 超短超强激光与物质相互作用可以产生单能的K-alpha线辐射、X射线激光辐射等。
- His monoenergetic does not share the arid work, can take to my entertainment feeling in the relaxation time, is really “omnipotent” good partner. 他不单能分担枯燥的工作，更能在休息时间里带给我的娱乐感受，真是“无所不能”的好伙伴。
- Electrons and protons are forms of ordinary matter, but positrons are antimatter particles. 电子和质子构成了普通物质，但正电子是反物质粒子。
- Milk not monoenergetic for flesh nutrition, moreover based on enzyme's function, also has the sterilization, to lessen the swollen area and to relax the skin tense effect. 牛奶不单能给肌肤营养，而且基于酵素的作用，亦有消炎、消肿及缓和皮肤紧张的功效。
- Both rely on mathematical calculations to determine the location from which a positron or photon was emitted. 这两种成像方法均依靠精确的计算来决定正电子或光于发射的位置。
- In this paper we discuss the minimum norm control problems of nuclear reactor systems governed by the monoenergetic steady-state isotropic transport equation. 摘要讨论核反应堆系统散射裂变截面的最小范数控制问题。
- Antimatter/matter reactions have practical applications in medical imaging, see Positron emission tomography (PET). 反物质/物质反应在医学成像有实际应用,注意正电子放射断层摄影术(PET)。
