sinusoidal
의미: Having the shape or characteristics of a sine wave — a smooth, periodic curve that oscillates symmetrically above and below a central axis.
Sinusoidal waveforms are the purest form of periodic oscillation and serve as the building blocks of more complex signals through Fourier analysis. Mains electricity is delivered as a sinusoidal alternating current, and many natural phenomena — tides, daylight hours, sound waves from tuning forks — follow sinusoidal patterns. The adjective appears regularly in physics, engineering, and mathematics, and occasionally in literary or journalistic writing to describe cyclical patterns.
예문
- The mains supply delivers a sinusoidal voltage at fifty hertz, which is the standard frequency across the United Kingdom. 市电以50赫兹的正弦电压供电,这是英国的标准频率。La red eléctrica suministra una tensión sinusoidal a cincuenta hercios, que es la frecuencia estándar en todo el Reino Unido.商用電源は50ヘルツの正弦波電圧を供給しており、これは英国全域の標準周波数である。상용 전원은 50헤르츠의 정현파 전압을 공급하며, 이는 영국 전역의 표준 주파수이다.
- Seasonal variations in daylight hours follow an approximately sinusoidal pattern over the course of a year. 日照时长的季节性变化在一年中大致遵循正弦模式。Las variaciones estacionales en las horas de luz diurna siguen un patrón aproximadamente sinusoidal a lo largo del año.日照時間の季節変動は、1年を通じてほぼ正弦波パターンに従う。일조 시간의 계절적 변동은 1년을 주기로 대략 정현파 패턴을 따른다.
- The function generator produced a clean sinusoidal output with less than one per cent total harmonic distortion. 函数发生器输出了干净的正弦信号,总谐波失真不到百分之一。El generador de funciones produjo una salida sinusoidal limpia con menos del uno por ciento de distorsión armónica total.ファンクションジェネレータは全高調波歪み1パーセント未満のきれいな正弦波出力を生成した。함수 발생기는 전고조파 왜곡률 1퍼센트 미만의 깨끗한 정현파 출력을 생성했다.
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사용 가이드
맥락: scientific, academic
어조: neutral
기원과 역사
From Latin sinus (curve, bay, fold) combined with the Greek-derived suffix -oidal (resembling). The mathematical sine function was named by medieval Latin translators of Arabic astronomical texts; 'sinusoidal' appeared in the 19th century.
문화적 배경
Era: Modern
Generation: All ages
Social background: Universal
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