positron

英 [ˈpɒzɪtrɒn]

美 [ˈpɑːzɪtrɑːn]

n.  正电子; 阳电子

复数：positrons　

化学

BNC.44376 / COCA.22917

牛津词典

noun

• 正电子；阳电子
  a particle in an atom which has the same mass as an electron and an equal but positive charge

英英释义

noun

• an elementary particle with positive charge
  Synonym:antielectron

双语例句

• These findings support several other studies using functional magnetic resonance imaging and positron emission tomography, both of which gauge brain activity by measuring blood flow.
  这些发现支持了几种应用功能磁共振成像和正电子放射X断层摄影术的研究（它们通过测量血流来检测大脑活性）。
• Research Progress and Clinical Application of Cardiac Positron Emission Tomography Perfusion Tracers
  正电子心肌灌注显像剂的临床应用及研究进展
• Partial volume effect ( PVE) and their influence factors for positron emission tomography ( PET) were investigated with computer simulation and experiments.
  用模拟实验研究了正电子发射断层扫描（PET）部分容积效应与相关影响因素间的关系。
• The nuclide chart involves electron, positron, antiproton, antineutron, photon to exhibit the symmetry of mass and charge ideally.
  该核素图将电子、正电子、反质子、反中子和光子收录在内，完美地表现了质量和电荷的对称性。
• This is the mathematical basis of computed tomography and positron emission tomography.
  这是计算机层析成像和正电子层析成像的数学基础。
• Progression of tumors pre-clinical study, clinical diagnosis and therapy follow-up using combined multiple positron tracers PET imaging
  多种正电子示踪剂PET联合显像在肿瘤基础研究、临床诊断和疗效监测中的应用进展
• Features and Applications of Positron Emission Tomography
  正电子发射断层照相（PET）的特色与应用
• The automatic data acquisition and processing for positron annihilation lifetime spectra and Doppler broadening spectra
  正电子湮没寿命谱和多普勒展宽谱的自动获取和处理技术
• 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）。
• The layout of HIRFL heavy ion cancer therapy terminal and the PET ( Positron Emission Tomography) project were described simply.
  文章简单描述HIRFL重离子肿瘤治疗装置布局和PET（正电子断层影像）的总体设计。