halogen
意味: Any of the five chemical elements in Group 17 of the periodic table — fluorine, chlorine, bromine, iodine, and astatine — which form salts when combined with metals. Also used to describe lamps and heaters that employ halogen gases.
Halogens are highly reactive non-metals that exist in all three states of matter at room temperature. In everyday British English, the word most commonly appears in connection with halogen bulbs or halogen hobs, but in scientific contexts it refers strictly to the element group. The term collocates frequently with 'lamp,' 'compound,' 'bond,' and 'cycle' in both technical and general usage.
例文
- The laboratory replaced its ageing fluorescent tubes with energy-efficient halogen alternatives. 实验室用高效节能的卤素灯替换了老旧的荧光灯管。El laboratorio sustituyó sus antiguos tubos fluorescentes por alternativas halógenas de bajo consumo.その研究室は老朽化した蛍光灯管をエネルギー効率の高いハロゲン式に交換した。실험실은 노후한 형광등을 에너지 효율이 높은 할로겐 조명으로 교체했다.
- Chlorine, the most industrially significant halogen, is used extensively in water purification across the United Kingdom. 氯是工业上最重要的卤素,在英国各地的水净化中被广泛使用。El cloro, el halógeno de mayor importancia industrial, se utiliza ampliamente en la depuración de agua en todo el Reino Unido.塩素は産業的に最も重要なハロゲンであり、イギリス全土の浄水処理に広く使用されています。염소는 산업적으로 가장 중요한 할로겐으로, 영국 전역의 수질 정화에 광범위하게 사용된다.
- The chemistry syllabus requires students to understand the reactivity trends of the halogen group. 化学教学大纲要求学生理解卤素族的活泼性递变规律。El programa de química exige que los alumnos comprendan las tendencias de reactividad del grupo de los halógenos.化学の教育課程では、ハロゲン族の反応性の傾向を理解することが求められています。화학 교육 과정에서는 학생들이 할로겐족의 반응성 경향을 이해하도록 요구한다.
発音
使い方ガイド
場面: academic, general
トーン: neutral
起源と歴史
From Swedish halogen, coined in 1842 from Greek hals (salt) and -gen (producing), reflecting the elements' tendency to form salts.
文化的背景
Era: Modern
Generation: All ages
Social background: Universal
このトピックの他の表現
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