abbreviationɛfɛf
1Grammar
Feminine.
〔语法〕同 FEMININE
2in combination (in units of measurement) femto- (10⁻¹⁵)
(用于量度单位中)同 FEMTO-
the detection limits of the enzymatic activity tests are between 10 and 500 fg per test
3(in textual references) folio.
(文献标注用语)同FOLIO
5(in racing results) furlong(s)
(赛车或赛马成绩用语)同FURLONG 或furlongs
6Chemistry
Denoting electrons and orbitals possessing three units of angular momentum.
〔化〕(指电子和轨道)有三个角动量单位的
f轨道。
ɛfɛf
1Focal length.
焦距
apertures of f/5.6 to f/11
焦距5.6-11的孔径。参见F-NUMBER。
See also f-number
2Mathematics
A function of a specified variable.
〔数〕(特定变量的)函数
x的函数值。
3Electronics
Frequency.
〔电子〕频率
abbreviationɛfɛf
3"F"Chemistry
Faraday(s).
4(in racing results) favourite.
(赛车或赛马成绩用语)同FURLONG 或furlongs
6Fighter (in designations of US aircraft types)
7Biology
Filial generation.
8British Fine (used in describing grades of pencil lead)
9(in motor racing) formula.
10Franc(s)
$1.00 = F5.9645 as at April 29
11France (international vehicle registration).
12(in tables of sports results) goals or points for.
ɛfɛf
1The chemical element fluorine.
nounPlural F's, Plural Fs, Plural fsɛfɛf
1The sixth letter of the alphabet.
- 1.1 Denoting the next after E in a set of items, categories, etc.
- 1.2 The sixth highest or lowest class of academic marks (also used to represent ‘Fail’)
they are guaranteed F's if they goof around
Example sentencesExamples
- In the schools I went to, when you get that many Fs, you flunk out.
- Moreover, not only Fs but also Ds are frowned on, and grades are regularly inflated to achieve C averages.
- 1.3"f"Chess Denoting the sixth file from the left, as viewed from White's side of the board.
Example sentencesExamples
- Black has no way to oppose the Rooks on the f-file.
- I don't like black's vulnerable f file or e5 pawn however.
2usually "F"Music
The fourth note of the diatonic scale of C major.
- 2.1 A key based on a scale with F as its keynote.
Example sentencesExamples
- The key of F is found most commonly in folk-oriented music.