spec·trum <pl -tra [or -s]> [ˈspektrəm, pl -trə] 名词
1. spectrum 物理 (band of colours):
2. spectrum (frequency band):
3. spectrum 引 (range):
4. spectrum 政治, 社会:
vis·ible [ˈvɪsəbl̩] 形
1. visible (able to be seen):
visible spectrum 名词
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单语范例（未经PONS编辑处理）
Absorptive filter attenuation values are usually valid for the visible spectrum (500800 nm) and are not valid outside of that spectral region.
en.wikipedia.org This heating element, when electrified, heats due to its electrical resistance and begins to emit light in the visible spectrum, hence the term glow -plug.
en.wikipedia.org Within the visible spectrum, wavelengths of light are weighted according to a function called the photopic spectral luminous efficiency.
en.wikipedia.org They used that chip to the measure coherence lengths of a broadband xenon lamp for hundreds of wavelengths across the visible spectrum.
phys.org With the introduction of panchromatic film the whole visible spectrum needed to be brought to an acceptably sharp focus.
en.wikipedia.org 浏览词典
- viscounty
- viscous
- viscus
- vise
- visibility
- visible spectrum
- visible trade
- visibly
- Visigoth
- vision
- visionary