positron
US /ˈpɑ:zɪtrɑ:n/
・UK /ˈpɒzɪtrɒn/
A1 初級
n.名詞正電子
影片字幕
額顳葉痴呆症，病因，體徵和症狀，診斷和治療。 (Frontotemporal Dementia, Causes, Signs and Symptoms, Diagnosis and Treatment.)
04:38
- Positron emission tomography of the brain.
大腦的正電子發射斷層掃描。
- Imaging tests such as MRI scans, or PET (positron emission tomograph) of the brain.
影像測試，例如核磁共振造影或腦部的正子斷層掃描。
10 個放射學亞專科釋義 (10 Radiology Subspecialties Explained)
16:59
- The most well known type of nuclear medicine scan is positron emission tomography, or pet, which detects cancer and other disease processes by measuring the metabolic activity of cells.
最廣為人知的核子醫學掃描類型是正子斷層掃描，簡稱 PET，它透過測量細胞的代謝活性來偵測癌症和其他疾病過程。
捉鬼敢死隊 (1984) - 誘捕史萊姆的場面 | 電影剪輯 (Ghostbusters (1984) - Trapping Slimer Scene | Movieclips)
03:07
- You've got to go across the street maybe now you'll never slime a guy with a positron collider, huh?
你得去街對面，也許現在你永遠不會用正電子對撞機黏住一個人，嗯？
大型強子對撞機如何在 10 分鐘內工作 (How the Large Hadron Collider Works in 10 Minutes)
10:03
- For example, an electron is negatively charged, and its antiparticle, positron, has the same mass but is positively charged.
例如，電子帶負電，其反粒子正電子品質相同，但帶正電。
- Now, we can take two antiparticles opposite to the proton and electron, the antiproton and positron.
現在，我們可以取兩個與質子和電子相對的反粒子，即反質子和正電子。
不可能的μ子 (Impossible Muons)
04:34
- they spontaneously decay into an electron or positron and some neutrinos.
它們自發地衰變成電子或正電子和一些中微子。
