this/that/the + conic + be + noun phrase
conic 是 conic section 的简称,作可数名词时单数前需加限定词。
This conic is a parabola.
这条圆锥曲线是抛物线。
(几何)平面与圆锥相交产生的曲线
A conic section; a curve formed by the intersection of a plane with a circular cone.
圆锥曲线。
A conic section.
(几何)平面与圆锥相交产生的曲线
(geometry) a curve generated by the intersection of a plane and a circular cone
In geometry class, the teacher drew a conic on the board and asked us to identify it.
几何课上,老师在黑板上画了一条圆锥曲线,让我们辨认它。
用法提示:conic 在此作名词,指平面与圆锥相交得到的曲线。
The orbit of a planet is a conic, but it is usually close to a circle.
行星的轨道是圆锥曲线,但通常接近圆形。
用法提示:conic 作名词,表示圆锥曲线,强调其几何形状。
We studied several conics, including the ellipse and the hyperbola.
我们研究了包括椭圆和双曲线在内的几种圆锥曲线。
用法提示:conics 是 conic 的复数形式,指多种圆锥曲线。
conic 是 conic section 的简称,作可数名词时单数前需加限定词。
This conic is a parabola.
这条圆锥曲线是抛物线。
用 a 表示泛指;表示多个时用复数形式 conics。
A conic can be an ellipse or a hyperbola.
圆锥曲线可以是椭圆或双曲线。
可用 that 引导定语从句对 conic 进行限定。
The conic that we plotted yesterday is a hyperbola.
我们昨天绘制的那条圆锥曲线是双曲线。
grammar · medium
易错句子I drew conic in math class.
正确表达I drew a conic in math class.
conic 在此是单数可数名词,前面需要冠词 a;汉语没有冠词,容易漏掉。
grammar · medium
易错句子We studied three conic in class.
正确表达We studied three conics in class.
conic 是可数名词,复数要在词尾加 -s;汉语名词没有复数变化,容易漏掉。
grammar · medium
易错句子A parabola is a cone.
正确表达A parabola is a conic.
cone 指圆锥体,conic 指圆锥曲线;parabola 属于 conic,不是 cone。
conic 是名词,指圆锥曲线;conical 是形容词,指圆锥形状的。
cone 指立体图形或曲面,conic 指平面截该曲面得到的曲线。
conic 和 comic 仅一字母之差,读音相近;conic 是数学术语,comic 与幽默或漫画有关。
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