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单词 Gray body
释义

Gray body

原声例句
科学60秒-科学美国人 2021年8月合集

" They all kind of look the same. They have a cute little yellow head and a gray body."

“它们看起来几乎一样。它们有可爱的黄色小脑袋和灰色的身体。”

十字小溪(下)

The gray bodies whisk up and down the hickory trunks.

灰色的身体在山核桃树干上上下移动。

科学60秒-科学美国人 2020年8月合集

" They have a cute little yellow head and a gray body." Brett Furnas, a biostatistician at the California Department of Fish and Wildlife.

“ 它们有一个可爱的黄色小脑袋和一个灰色的身体。” 加州鱼类和野生动物部的生物统计学家 Brett Furnas 说。

英语百科

Black body

As the temperature of a black body decreases, its intensity also decreases and its peak moves to longer wavelengths. Shown for comparison is the classical Rayleigh–Jeans law and its ultraviolet catastrophe.
An approximate realization of a black body as a tiny hole in an insulated enclosure
An idealized view of the cross-section of a star. The photosphere contains photons of light nearly in thermal equilibrium, and some escape into space as near-black-body radiation.
Effective temperature of a black body compared with the B-V and U-B color index of main sequence and super giant stars in what is called a color-color diagram.[36]

A black body is an idealized physical body that absorbs all incident electromagnetic radiation, regardless of frequency or angle of incidence. A white body is one with a "rough surface [that] reflects all incident rays completely and uniformly in all directions."

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