neutron
含义: A subatomic particle found in the nucleus of every atom except hydrogen, having no electric charge and a mass slightly greater than that of a proton.
Neutrons play a crucial role in nuclear stability. The number of neutrons in a nucleus determines which isotope of an element it is. Free neutrons (outside the nucleus) are unstable and decay into protons within minutes. Neutron bombardment is the mechanism behind nuclear fission, and neutron sources are used in materials testing, medical treatments, and research reactors.
例句
- The number of neutrons in a nucleus determines the isotope of the element. 原子核中的中子数决定了该元素的同位素。El número de neutrones en un núcleo determina el isótopo del elemento.原子核内の中性子の数が元素の同位体を決定する。원자핵 내 중성자의 수가 해당 원소의 동위원소를 결정한다.
- Neutron bombardment of uranium-235 triggers a chain reaction in nuclear power plants. 铀-235的中子轰击在核电站中引发链式反应。El bombardeo de neutrones del uranio-235 desencadena una reacción en cadena en las centrales nucleares.ウラン235への中性子照射は原子力発電所で連鎖反応を引き起こす。우라늄-235에 대한 중성자 충돌은 원자력 발전소에서 연쇄 반응을 일으킨다.
- Scientists used a neutron beam to analyse the internal structure of the ancient bronze statue without damaging it. 科学家使用中子束分析了古代青铜雕像的内部结构,且不会造成损伤。Los científicos emplearon un haz de neutrones para analizar la estructura interna de la antigua estatua de bronce sin dañarla.科学者たちは中性子ビームを使い、古代の青銅像の内部構造を損傷なく分析した。과학자들은 중성자 빔을 사용하여 고대 청동 조각상의 내부 구조를 손상 없이 분석했다.
发音
用法指南
语境: academic
语气: neutral
起源与历史
Coined in 1921 by William Harkins from the Latin neuter (neither), reflecting the particle's lack of electric charge. James Chadwick confirmed the neutron's existence experimentally in 1932.
文化背景
Era: Modern
Generation: All ages
Social background: Universal
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