| 单词 | line frequency |
| 释义 | > as lemmasline frequency line frequency n. Television the number of scanning lines produced per second. ΘΚΠ society > communication > broadcasting > television > visual element > [noun] > signals, types, or parts of picture frequency1926 picture signal1927 black level1935 line frequency1936 pedestal1937 line scan1938 picture black1938 white level1938 porch1941 test signal1945 spot wobble1950 luminance1953 1936 O. S. Puckle tr. M. von Ardenne Television Reception i. 11 The total number of lines in the complete picture is 240, scanned sequentially and horizontally at 25 picture traversals per second... The line frequency is thus 6,000 impulses per second. 1973 Newnes Colour Television Servicing Man. I. i. 26/1 Sawtooth voltage at line frequency is developed across the inductive network. < as lemmas |
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