接受正电子是艰难的第一步。
结果将使得电子的阴影和正电子的阴影被分开。
The result is that the electron shadow and the positron shadow are separated.
巴里·巴里斯：这是对撞电子和正电子的机器。
Barry Barish: it's a machine that will collide electrons and positrons.
新型的对撞机必须提供电子-正电子湮灭的准确测量结果。
The new collider has to provide exact measurements of electron-positron annihilation.
将正电子寿命谱仪的可工作能区分成42个小块。
The workable region for a spectrometer was divided into 42 small regions.
一些天文学家猜测爆炸的恒星能够产生这些正电子。
Some astronomers have suggested that exploding stars could produce the positrons.
正电子与人体组织中的电子发生作用而湮灭，产生两个伽玛射线光子。
These positrons then come into contact with electrons in the body, and the two annihilate, releasing two gamma-ray photons.
正电子和电子(粒子和反粒子)在对撞中会发生湮灭，并产生电磁辐射。
Positron and electron (particle and anti-particle) can annihilate in collision turning into electromagnetic radiation.
然后将反质子推入到装有正电子的容器中，用大约一秒钟的时间等待它们混合。
The antiprotons are then pushed into the same trap as the positrons and left to mingle for a second or so.
同时，来自放射性钠一种形式的衰减正电子被慢慢分开且累积起来。
Meanwhile, positrons from the decay of a form of radioactive sodium are separately slowed and accumulated.
让处于高温与高速运动状态的反质子和正电子进行结合是一桩非常困难的工作。
Coaxing hot and bothered antiprotons and positrons to couple is quite a task.
正电子放射断层造影术(PET)是新兴的适用于肺癌分期的检查方法。
Positron emission tomography (PET) is an emerging modality in lung cancer staging.
布莱克特几乎是第一个发现正电子存在的有力证据的人，但他却没敢发表这个结果。
Blackett was really the first to obtain hard evidence for the existence of a positron but he was afraid to publish it.
即正电子放射断层摄影术，是一项成像研究，它能使医生评价大脑对某些物质的使用。
PET, or positron emission tomography, is an imaging study that allows doctors to evaluate the use of certain substances by the brain.
对电子来说，与其相对应的是正电子，后者被安德森于1932年在宇宙射线实验中发现。
To the electron, the corresponding system is the positron, which was observed after the prediction in cosmic ray experiments by Anderson in 1932.
所以，电子带负电，那它对应的反物质正电子就带正电，并且它俩如果靠太近就会湮灭掉。
So while an electron has a negative charge, its antimatter counterpart, a positron, has a positive charge and they annihilate each other when they get too close.
某些伽马射线在靠近原子核的附近经过，进入到转化为个电子和正电子的过程，研究人员说。
Some of these gamma rays pass near atomic nuclei, in the process transforming into an electron and a positron, researchers said.
这是因为放射性核素在这巨大的爆炸能量中形成，其中一些放射出正电子而衰变。
This is because radioactive nuclear elements are formed in the giant outbursts of energy, and some of these decay by releasing positrons.
正电子和电子会相互湮灭而发射出的伽玛射线，再由费米的爆发检测器所检测到，研究人员说。
Positrons and electrons annihilated each other, emitting gamma rays detected by Fermi's gamma-ray burst detector, researchers said.
这些地面伽玛射线闪光产生了高速的电子和正电子，然后它们缩回到地球的磁场上去撞击航天器。
The [terrestrial gamma-ray flash] produced high-speed electrons and positrons, which then rode up Earth's magnetic field to strike the spacecraft.
他们做了一个成像测试正电子发射断层或PET测试脑功能，看看大脑是如何使用好葡萄糖或糖。
And they did an imaging test called positron emission tomography or PET to test for brain function by looking to see how well the brain USES glucose or sugar.
而第一个发表正电子存在的证据并被冠以正电子发现人这一称号的的人则变成了安德森。
It was left to Anderson to first publish the evidence for the existence of a positron and to scoop the credit for the discovery of the positron.
这些技术包括磁共振成像(MRI)，正电子成象术(PET)机能性磁共振成像(fMRI)。
These techniques include magnetic resonance imaging (MRI), positron emission tomography (PET), and functional magnetic resonance imaging (fMRI).
然而，尚不清楚是否有足够数量的正电子能够逃离恒星残骸以解释观察得到云团的大小。
However, it is unclear whether these positrons can escape from the stellar debris in sufficient quantity to explain the size of the observed cloud.
该小组已开发出冷却正电子和反质子的改进技术，通过应用这些技术应该能够捕获到更多的反原子。
It has developed better techniques for cooling both positrons and antiprotons, which should allow it to trap more anti-atoms.
在患者安静状态下和在使用潘生丁时，用正电子发射断层摄影测量其特殊微血管血流速。
Positron emission tomography imaging was performed to measure specific microvascular blood flow at rest and during pharmacological vasodilation by IV dipyridamole.
正电子断层扫描仪进行人体扫描的时候，病人被注入正电子放射性核素，然后推入检测环。
During a PET scan, the patient is injected with radioactive tracer molecules that emit positrons when they decay.
制造伽马射线短脉冲的一种方法，是电子与正电子的碰撞——之后的湮灭，使粒子的质量转化为能量。
One way to create such short bursts of gamma rays is through the collision — and subsequent annihilation, as the mass of those particles converts into energy — of an electron and a positron.
反氢原子是正电子(所谓正电子就是反物质的电子)围绕着以反质子为核心，作轨道运行所形成。
The antihydrogen atoms are composed of a positron (an antimatter electron) orbiting an antiproton nucleus.
7月9号在波兰罗兹举办的国际宇宙射线大会上，科林博士指出，月球能像阻隔光线那样有效的阻隔电子和正电子。
As Dr Colin described on July 9th to the International Cosmic Ray Conference held in Lodz, Poland, the moon blocks electrons and positrons as effectively as it blocks light.
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