| 单词 |
summational |
| 释义 |
summational, a.|sʌˈmeɪʃənəl| [f. summation + -al1.] Produced by summation or addition. summational tone: see tone n. 2.
1873A. J. Ellis in Atkinson tr. Helmholtz' Pop. Lect. Sci. Subj. iii. 102 note, These [combinational tones] are of two kinds, differential and summational, according as their pitch is the difference or sum of the pitches of the two generating tones. 1881Nature XXIV. 100, I tried in vain..to obtain resonance for a differential and summational tone. |

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