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正电子

na.positron; positive electron
网络antielectron; PET; Positrons

正电子

英-汉网络释义

正电子

positron

常用物理英文词汇 - 豆丁网 ... positive plate 正极板 positron 正电子 potential energy 势能 ...

positive electron

物理专业英语词汇(P)|数学物理英语词汇 ... positive electrode 阳极 positive electron 正电子 positive element 正元素 ...

antielectron

英语新词汇与常用词汇的翻译(A) ... antidumping 反倾销政策的 antielectron 正电子 antiemetic 止呕吐的 ...

PET

4.正电子（PET）发射计算机断层显像,它的基本原理是:将放射性同位素15O注入人体,参与人体的代谢过程.15O在人体内衰变放 …

Positrons

正电子(Positrons)：电子的反物质伙伴。正电子是有电子的相反质 ----------------------- 页面 159----------------------- 量的电子...

PET Scan

接著，我作了正电子（PET Scan）检查，肿瘤科医生跟手术科医生商榷后，预计要切除整个脾脏，胃亦最少要切除一部分，所 …

positronic

I Robot - Runaround flashcards | Quizlet ... position 位置地点 positronic 正电子 risk 危险风险 ...

例句：

But the lightning flash detected by Fermi appeared to have produced about 100 trillion positrons: "That 's a lot , " he said .

不过，费尔米发现的闪电似乎产生了一百万亿正电子，“那可是个天文数字，”他说。

It needed some years of development by the experimenters before the fact of the existence of positrons was established .

确立存在正电子这个事实还需要几年的实验发展。

If the material being tested has no defects in it , the positrons react a little differently .

如果所探测的材料不存在缺陷，正电子则表现得稍有不同。

In the case of a material with a defect , the positrons are trapped at nano-sized defects in the material .

如果材料有缺陷，这些正电子可以捕捉到纳米尺寸的材料缺陷。

Total cross sections for positron scattering on potassium were calculated at low energies by means of the coupled channels-optical method .

应用耦合通道光学势方法计算低能正电子同钾原子碰撞的总散射截面。

It was only in 1932 , when the electron 's antimatter sibling , the positron , was sighted in cosmic rays that such a thing was found to exist .

只有当 1932年与电子相反的兄弟，正电子，在宇宙射线中被发现的时候，才证明这种物质的确存在。

An atom of antihydrogen , for instance , is composed of a negatively -charged antiproton being orbited by a positively-charged positron .

举例来说，一个反氢原子，由带正电荷的正电子围绕带负电荷轨道运行的反质子组成。

From earlier results using much less data , the positron cloud seemed to be spherical and centred on the centre of the galaxy .

从使用较少数据的早期结果来看，正电子云似乎是呈球状位于银河中心。

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。

The antiprotons are then pushed into the same trap as the positrons and left to mingle for a second or so.

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。

By means of positron annihilation lifetime spectra (PALS), the free volume of polymer could be tested.

通过正电子湮没寿命谱技术（PALS ）探测聚合物的自由体积特性，能够了解聚合物的微观性质。

These positrons then come into contact with electrons in the body , and the two annihilate , releasing two gamma-ray photons .

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。

It has developed better techniques for cooling both positrons and antiprotons, which should allow it to trap more anti-atoms.

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。

Coaxing hot and bothered antiprotons and positrons to couple is quite a task .

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。

But discovering the creation of positrons "gives us a very, very important clue as to what's happening . "

但是发现正电子的增加 “给了我们一个非常非常重要的线索来揭示闪电是如何发生的 ”。

This is because radioactive nuclear elements are formed in the giant outbursts of energy , and some of these decay by releasing positrons .

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。

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。

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