英语词汇“alpha particle”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

alpha particle

noun Physics

A helium nucleus emitted by some radioactive substances, originally regarded as a ray.Because the alpha particle (the helium nucleus) with two protons and two neutrons is especially cohesive, the release of nuclear material is often in this form....

The alpha particle is emitted by certain radioactive elements as they decay to a stable element.
A beta particle is an electron that could make it just a little way into the skin, while an alpha particle is a charged helium nucleus that will bounce right off of you.

单词	alpha particle
释义	alpha particle noun Physics A helium nucleus emitted by some radioactive substances, originally regarded as a ray.Because the alpha particle (the helium nucleus) with two protons and two neutrons is especially cohesive, the release of nuclear material is often in this form.... The alpha particle is emitted by certain radioactive elements as they decay to a stable element. A beta particle is an electron that could make it just a little way into the skin, while an alpha particle is a charged helium nucleus that will bounce right off of you.
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