| 单词 | acorn tube |
| 释义 | acorn tube in American English US Electronics a small vacuum tube shaped like an acorn acorn tube in American Englishnoun Electronics a vacuum tube, resembling an acorn in size and shape, used chiefly in ultrahigh-frequency electronic devices Word origin [1930–35]This word is first recorded in the period 1930–35. Other words that entered Englishat around the same time include: boondoggle, cloverleaf, logical positivism, old school tie, technical foul |
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