| 单词 | crookes space |
| 释义 | > as lemmasCrookes space Crookes space n. (also Crookes dark space, Crookes's space, Crookes's dark space) the dark space between the negative glow and the cathode of a vacuum tube, observed when the pressure is very low; also called cathode dark space, cathodic dark space.extracted from Crookesn.< as lemmas |
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