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1·PET stands for Positron Emission Tomography.

PET表示正电子放射断层造影术。

2·It was a very difficult first step to accept the positron.

接受正电子是艰难的第一步。

3·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。

4·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。

5·Positron emission tomography (PET) is an emerging modality in lung cancer staging.

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。

6·The new collider has to provide exact measurements of electron-positron annihilation.

新型的对撞机必须提供电子-正电子湮灭的准确测量结果。

7·After an immeasurably short time interval, the electron - positron pair recombine .

电子― 正电子偶经过一个不可测量的短暂时间间隔后就重新复合。

8·Later, electron and positron pairs were actually produced in laboratory experiments.

之后，电子与正电子对也最终在实验室中被制造出来。

9·The fraction is dependent on the target material, temperature and incident positron energy.

转换率依赖于靶材料、靶温度和入射慢正电子能量。

10·We investigate physicss properties of positronium and the way of positron - electron annihilation.

探讨正电子偶素的物理性质以及正电子—电子对的湮灭方式。

正电子

1·Blackett was really the first to obtain hard evidence for the existence of a positron but he was afraid to publish it.

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。

2·To the electron, the corresponding system is the positron, which was observed after the prediction in cosmic ray experiments by Anderson in 1932.

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。

3·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。

4·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.

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。

5·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.

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。

(1)positron emission正电子发射

(1)positron emission tomography[化]正电子成象术；正电子放射断层造影术

(1)positron annihilation正电子湮没；阳电子湮没