🔍 牛津詞典
🔍 朗文詞典
🔍 劍橋詞典
🔍 柯林斯詞典
🔍 麥美倫詞典
🔍 韋氏詞典 🎯

檢索以下詞典:
(Mr. Ng 不推薦使用 Google 翻譯!)
最近搜尋:
BNC: 10937 COCA: 12172

proton

1 ENTRIES FOUND:
proton /ˈproʊˌtɑːn/ noun
plural protons
proton
/ˈproʊˌtɑːn/
noun
plural protons
Learner's definition of PROTON
[count] physics
: a very small particle of matter that is part of the nucleus of an atom and that has a positive electrical charge质子
BNC: 10937 COCA: 12172

proton

noun

pro·​ton ˈprō-ˌtän How to pronounce proton (audio)
: an elementary particle that is identical with the nucleus of the hydrogen atom, that along with the neutron is a constituent of all other atomic nuclei, that carries a positive charge numerically equal to the charge of an electron, and that has a mass of 1.673 × 10−27 kilogram
protonic adjective

Example Sentences

Recent Examples on the Web WIMPs are believed to be heavy and slow-moving particles with masses between one and 1,000 times that of a proton, created in the early universe as other subatomic particles collided. Robert Lea, Popular Mechanics, 29 July 2022 The more sophisticated option, which the Marie device and others use, is a high-energy proton beam. Devi Shastri, Milwaukee Journal Sentinel, 17 May 2022 The first element on the periodic table, hydrogen is just a single proton and electron. Tim Fitzpatrick, The Salt Lake Tribune, 22 Apr. 2022 Normal hydrogen has one proton and no neutrons in its nucleus. David Donovan, The Conversation, 4 Apr. 2022 The positive pen interacts with both the negative electron and the positive proton. Rhett Allain, Wired, 28 Jan. 2022 Instead, Helion’s approach is to make their own 3He by creating deuterium-deuterium fusion that creates 3He + a neutron and 3H + a proton. James Conca, Forbes, 9 Nov. 2021 Pressure is also generated when hydrogen nuclei, which each have one proton, fuse with other hydrogen nuclei to form helium, which has two protons. Priyamvada Natarajan, The New York Review of Books, 15 June 2021 For the nuclear processes involved in both creating and burning deuterium, that’s where deuterium fuses with a proton to form helium-3, an uncommon, light, but stable isotope of the element helium. Ethan Siegel, Forbes, 6 Apr. 2021 See More

Word History

Etymology

Greek prōton, neuter of prōtos first — more at proto-

First Known Use

1920, in the meaning defined above

Time Traveler
The first known use of proton was in 1920
BNC: 10937 COCA: 12172

👨🏻‍🏫 Mr. Ng 韋氏詞典 📚 – mw.mister5️⃣.net
切換為繁體中文
Site Uptime