| 单词 | gas-focused |
| 释义 | > as lemmasgas-focused gas-focused adj. Electronics (now chiefly historical) (of a cathode ray tube) focusing the electron beam by means of positive ions produced in a residual gas. ΚΠ 1932 Jrnl. Inst. Electr. Engineers 71 57 (title) Accuracy of measurements made with hot-filament cathode-ray tubes of the gas-focused type. 1959 J. F. Rider & F. D. Uslan Encycl. Cathode-Ray Oscilloscopes (ed. 2) i. 11/1 The Western Electric 224, a gas-focused type of tube. 1995 A. Abramson Zworykin vi. 74 A tremendous advance over the Western Electric gas-focused tube that had dominated the oscillograph field. < as lemmas |
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