positron信息详情
n.[物]正电子，阳电子
deposit slip───n.存款单
accusative preposition───宾格介词
unfilled position───空缺职位
positive signs───n.（数）正号，加号（同plussign）
dominant position───支配地位；优势
brevet position───信息位置
chromite chemical composition───铬矿化学成分
prepositions or adverbs───介词或副词
depositories meaning───受托人含义
transposition cipher───移位密码，错位密码；转置密码
was a very difficult first step to accept the positron.───接受正电子是艰难的第一步。
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。
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。
So, the antiparticle of the normal electron is called the positron, as it has a positive charge, but the same mass as the electron.───这样，正常电子的反粒子叫做正（阳）电子，如同它有一个阳电荷一样，但是与电子的质量一样。
Some of these gamma rays pass near atomic nuclei, in the process transforming into an electron and a positron, researchers said.───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。
For instance, the antimatter opposite of an electron, known as a positron, is positively charged.───例如，电子的反物质就是带正电的质子。
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。
Next the antiatoms encounter a strong electric field that strips apart the antiproton and positron of the weakly bound antiatoms .───接著，反原子会遇到一个强电场，把束缚松散的反原子里的反质子及正子给拆开。
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。
Positron emission tomography imaging was performed to measure specific microvascular blood flow at rest and during pharmacological vasodilation by IV dipyridamole.
Positron emission tomography ( PET ) is a non - invasive method to detect the distribution of radionuclide in vivo.
The positron is an antielectron.
When an electron collides with a positron the two particles disappear, or annihilate, to create a high-energy photon.
The Positron lifetime spectra of unannealed and annealed Ni-coats, electro-plated from the four typical baths, have been measured.
This was confirmed by the positron annihilation technique.
The Harvard group use positron emission tomography ( PET ) scans to monitor the brain activity.
The antielectron, or positron, was discovered in 1932.
The electron - positron pair may survive without recombining.