positron的例句大全

The electron, for example, has negative charge, whilst its antiparticle, called the positron, has positive charge.

举例说明, 比如电子带负电荷, 同时, 它的反粒子被称作正电子—带有正电荷.

This was confirmed by the positron annihilation technique.

正电子湮没技术证实了这种空位的存在.

Magnetized water samples were measured by the positron annihilation lifetime spectrometer.

用正电子湮没寿命谱仪对经过磁场处理的水样品进行了对照测量.

The Harvard group use positron emission tomography ( PET ) scans to monitor the brain activity.

哈佛大学的研究组运用正电子发射X射线 层析照相术 ( PET ) 监测大脑的活动.

Positron emission tomography ( PET ) is an imaging technique that combines a radioactive tracer with a molecule.

正电子发射断层成像 ( PET ) 是一种结合单一分子放射示踪的成像技术.

Molecular imaging with positron emission tomography ( PET ) is an important field of molecular imaging.

正电子发射断层 ( PET ) 分子影像学是分子影像学的重要内容.

Studies of electrophysiological positron emission tomography and patients have provided important evidence supporting this viewpoint.

电生理研究、成像研究以及病人研究都为这一观点提供了可靠的证据.

These new tests are resonance imaging ( MRI ) and positron emission tomography ( PET ) scanning of the heart.

这两个检查项目分别称为核磁共振 ( MRI ) 和正电子发射断层显像 ( PET ) .

How few cancer cells can be detected positron emission tomography?

正电子发射断层摄影怎样探测少量癌症细胞?

Scatter coincident events are the important factor that affects the quality of positron emission tomography ( PET ) images.

散射事件是影响正电子发射断层扫描术 ( Positronemissiontomography,PET ) 图像重建质量的一个重要因素.

Objective To evaluate the value of high energy positron imaging in the diagnosis of colon neoplasm.

目的评估高能正电子成像技术在结肠肿瘤诊断中的临床实用价值.

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.

Objective : To discuss the nursing countermeasure for receiving high quality Positron Emission Tomography ( PET ) image.

目的: 探讨 正电子 发射 计算机断层 显像检查中的护理方法.

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.

The antielectron, or positron, was discovered in 1932.

反电子或正电子, 是在1932年被发现.

The positron is an antielectron.

正电子就是反电子.

You can read more about Positron by viewing the Positron Company Profile.

正电子信息您可以通过查看阅读更多关于正电子正电子公司简介.

The Positron lifetime spectra of unannealed and annealed Ni-coats, electro-plated from the four typical baths, have been measured.

测量了四种典型镍镀层的采透火和退火试样的正电子湮没寿命谱。

The reaction kinetics of positronium o-Ps on MoNi/ Al2O3 hydrotreating catalyst was studied by using the positron annihilation spectroscopy for chemical analysis ( PASCA).

采用化学分析正电子湮没谱（PASCA）技术研究正电子素（o-Ps）在MoNi/Al2O3加氢催化剂上的反应动力学。

The increase mechanism of dislocation and micro-voids in deep drawing sheet steel during forming paths of uniaxial tension, plane strain and equal biaxial stretch was studied by using positron annihilation lifetime method.

本文应用正电子寿命法研究了深冲钢板在单向拉伸、平面应变和等双向拉伸变形过程中的位错和微空洞增长机制。