gas focusing
Electronics (now chiefly historical )
noun
(In a cathode ray tube) focusing of an electron beam by means of positive ions produced in a residual gas.
Origin
1930s; earliest use found in Journal of the Franklin Institute.
| 单词 | gas focusing |
| 释义 | gas focusingElectronics (now chiefly historical ) noun (In a cathode ray tube) focusing of an electron beam by means of positive ions produced in a residual gas. Origin |
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