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f 音标拼音: ['ɛf] n. 字母f 字母f F n 1: a degree on the Fahrenheit scale of temperature [synonym: {degree Fahrenheit}, {F}] 2: a nonmetallic univalent element belonging to the halogens; usually a yellow irritating toxic flammable gas; a powerful oxidizing agent; recovered from fluorite or cryolite or fluorapatite [synonym: {fluorine}, {F}, {atomic number 9}] 3: the capacitance of a capacitor that has an equal and opposite charge of 1 coulomb on each plate and a voltage difference of 1 volt between the plates [synonym: {farad}, {F}] 4: the 6th letter of the Roman alphabet [synonym: {F}, {f}] F \F\ ([e^]f). 1. F is the sixth letter of the English alphabet, and a nonvocal consonant. Its form and sound are from the Latin. The Latin borrowed the form from the Greek digamma ?, which probably had the value of English w consonant. The form and value of Greek letter came from the Ph[oe]nician, the ultimate source being probably Egyptian. Etymologically f is most closely related to p, k, v, and b; as in E. five, Gr. pe`nte; E. wolf, L. lupus, Gr. ly`kos; E. fox, vixen; fragile, break; fruit, brook, v. t.; E. bear, L. ferre. See Guide to Pronunciation, [sect][sect] 178, 179, 188, 198, 230. [1913 Webster] 2. (Mus.) The name of the fourth tone of the model scale, or scale of C. F sharp (F [sharp]) is a tone intermediate between F and G. [1913 Webster] {F clef}, the bass clef. See under {Clef}. [1913 Webster] |
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