| 单词 | multiple valve |
| 释义 | > as lemmasmultiple valve multiple valve n. Electronics a multi-electrode valve. ΘΚΠ the world > matter > physics > electromagnetic radiation > electronics > electronic devices or components > thermionic valve > [noun] > vacuum tube or thermionic valve vacuum tube1859 trigger tube1894 audion1906 pliotron1915 diode1919 electron tube1919 negatron1919 pentode1919 power valve1919 tetrode1919 triode valve1919 magnetron1921 bright emitter1923 peanut valve1923 peanut1924 power tube1924 multiple valve1929 thyratron1929 heptode1932 hexode1933 pentagrid1933 acorn tube1934 octode1934 triode-pentode1936 triode-hexode1937 transitron1939 trochotron1947 steering diode1957 1929 Wireless World 6 Mar. (heading) A Loewe multiple valve for mains operation. 1968 Radio Communication Handbk. (ed. 4) ii. 20/1 The trend is to make radio equipment as compact as possible and it is therefore convenient to take advantage of the special multiple valves which have more than one unit contained in a single envelope. < as lemmas |
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