foci
/foh-sahy, -kahy/US // ˈfoʊ saɪ, -kaɪ //
焦点,重点,焦点问题,重点领域
Related Words
focal point中心点,联络点,焦点,焦点人物target目标,目标人物,目标是,目标是什么spotlight聚光灯,聚焦,聚光灯下,焦点问题limelight焦点,亮点,焦点人物,焦点问题core核心,核心部分,核心内容,核心提示center中心,中央,中间,中心点hub枢纽,枢轴,中枢,枢纽中心heart心,心脏,心灵,心儿headquarters总部,总部的,总部的情况seat座位,座椅,座,座位数locus地点,位置,定位,所在polestar极星,极光,极星号,极光星cynosure曝光,曝光度,曝光率,曝光量nerve center神经中枢,神经中心,神经系统中心,神经中心的bull's eye靶心,鹄的,牛眼,正中靶心
Definitions
n.名词 noun
- 1
- : a plural of focus.
Synonyms & Antonyms
Examples
In an orbit made elliptical by the planetary attraction the sun necessarily occupies one of the foci of the ellipse.
That an ellipse may be given any required proportion of width to length by locating the foci at the requisite distance apart.
That the proportion of length to width in an ellipse is determined by the distance apart of the foci.
The curve thus traced will be an ellipse having the pins at the two points which are called its foci.
These are at points on the principal axis that are twice as far from O, the center of the lens, as are the principal foci.
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