Photonic band gap (PBG) structures have been shown to have a density of states (DOS) of emission field different from that of free-space vacuum field.

光子带隙结构中的辐射场态密度(DOS)不同于自由真空场中的辐射场态密度。

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Some electronic devices, such as field-emission displays in some flat panels, are made from nanotube yarns.

一些电子设备如场发射显示器面板均是用纳米管线制作而成的。

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Emission nebula Sharpless 249 fills the field at the upper left.

发射星云沙普利斯249弥漫在图像的左上部。

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who conducted the experiment of hydrogen emission spectrum in a magnetic field.

塞曼做了一个,磁场中的氢原子光谱实验。

麻省理工公开课 - 固态化学导论课程节选

Dr Zhou's method, by contrast, employs a process called electron-field emission.

ECONOMIST: Modern X-ray technology

An array of field-emission devices, however, will take their exposures simultaneously, so the resulting image should always be pin sharp.

ECONOMIST: Modern X-ray technology

There are, however, no interference problems with field-emission X-ray sources, so these can be used to take high-resolution pictures while treatment is proceeding.

ECONOMIST: Modern X-ray technology