| 单词 | decibel |
|---|---|
| 音标 | ['desibel] |
| 解释 | n.分贝(音量的单位) |
| 红宝书 | 【考】 decibel : sound / lumen : light / volt : electricity / watt : power(分贝是声音的单位/ 流明是光的单位/伏特 是电的单位/瓦特是能 量的单位)decibel : loudness / light-year : distance(分贝是音量的单位/ 光年是距离的单位) |
| 字源 | decibel (n.) 1928, from deci- + bel (n.). Progress in science and industry is constantly demanding new terms and one of the latest of these is the word "decibel," coined by telephone engineers to describe the efficiency of telephone circuits. It is a substitute for the phrase "transmission unit." The actual unit decided upon was first called "bel," after the inventor of the telephone. The bel, however, is larger than is needed in practice, and, therefore, a unit one-tenth as large was adopted by engineers and named the decibel. ["Popular Mechanics," May 1929] |
| 不择手段背单词 | n. 分贝(声强单位) 【类】decibel: sound = lumen: light = volt: electricity = watt: power分贝是声强单位 = 流明是光单位 = 伏特是电单位 = 瓦特是能量单位decibel: loudness = light-year: distance分贝是音量的单位 = 光年是距离的单位 |
| 趣味全助记 | 【记】deci 分 + bel 贝 deci 十分之一，一分 |
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