1. **词源分析**:“spectrum”源自拉丁语“spectre”(意为“影像”或“外观”),在科学语境中特指电磁波按波长或频率分布形成的连续序列。 2. **选项逐一分析**: - **A. 光线**(light ray):指光的传播路径,与“spectrum”强调的“波长分布”无关。 - **B. 光芒**(radiance):描述光的亮度或发散状...
The meaning of SPECTRUM is a continuum of color formed when a beam of white light is dispersed (as by passage through a prism) so that its component wavelengths are arranged in order. How to use spectrum in a sentence.
aAn aquaponic system that is in direct sunlight should receive adequate amounts of light and absorb the spectrums they need. 正在翻译,请等待... [translate] a但是在我看来,这件衣服是关爱的象征 But in my opinion, this clothes are the symbol which shows loving concern[translate] ...
The meaning of SPECTRUM is a continuum of color formed when a beam of white light is dispersed (as by passage through a prism) so that its component wavelengths are arranged in order. How to use spectrum in a sentence.
but they are only one end of a spectrum of extinction events.Collectively, more species went extinct during smaller events that were less dramatic but more frequent. The best known of the five major extinction events, the one that saw the demise of the dinosaurs, is the Cretaceous-Tertiary ex...
The evidence that the universe is expanding makes it possible to estimate its age. This evidence, called the redshift, is an increase in the wavelengths of light waves traveling through space—a shift toward the red end of the visible spectrum of wavelengths. Expansion of the space between gal...
5. The word “enhance” in the passage is closest in meaning to A. serve B. improve C. control D. protect 答案B 解析 词汇题:enhance,提高,增强,对应 B 选项,提高,改善。 Paragraph 3 The spread of this river valley agriculture in various parts of Asia and Africa was the decisive factor ...
Avarietyof stimuli, such assound,vibration, or light ofmoderateintensity (with theinfraredpart of thespectrumfiltered out), has nodetectableeffect on theactivityin the nerve. However, if objects of atemperaturedifferent from the surroundings are brought into the receptivefieldaround the head, there ...
Word History and Origins Origin ofspectrum1 First recorded in1605–15;fromLatin:“appearance, form,” equivalent tospec(ere)“to look at, regard” +-truminstrumental noun suffix Discover More Idioms and Phrases Idioms on the spectrum,having anautism spectrum disorder,or displaying behaviors considere...
The five major mass extinctions receive most of the attention, but they are only one end of a spectrum of extinction events.Collectively, more species went extinct during smaller events that were less dramatic but more frequent. The best known of the five major extinction events, the one that...