速熱陰極 的英文怎麼說
中文拼音 [sùrèyīnjí]
速熱陰極
英文
quick start cathode-
Cold-cathode gages cannot be degassed as easily or as rapidly as hot-filament tubes.
冷陰極壓力計不能像熱絲管那樣容易和迅速地排氣。However, the most commonly used x - ray sources didn " t change much no matter in structure or theory, still using thermionic cathodes as electron sources. such conventional x - ray tubes have some defaults, such as big volume, low frequency response, demanding for supply to cathode that was also brittle
目前使用的x光源的基本特點是採用熱電子發射形式即採用熱燈絲作為電子發射源，在高壓加速下轟擊陽極產生x射線，這樣的光源體積較大，需要加熱陰極的電源，且對頻率響應慢。
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