反面、相反、背面
a relation of direct opposition; "we thought Sue was older than Bill but just the reverse was true"
义项编号 13858604-n汉语开放词网 · 第353页
共 41,499 条，第353页完整浏览。按义项组织词语；同义词集及概念关系不表示这些词在任意句子中都能替换。英文义项说明保留来源原文。
对立面
同一义项的词语：对立面
something inverted in sequence or character or effect; "when the direct approach failed he tried the inverse"
义项编号 13858833-n更换
同一义项的词语：更换
a relational difference between states; especially between states before and after some event; "he attributed the change to their marriage"
义项编号 13859043-n改变
同一义项的词语：改变
a significant change; "the difference in her is amazing"; "his support made a real difference"
义项编号 13859307-n梯度
同一义项的词语：梯度
a graded change in the magnitude of some physical quantity or dimension
义项编号 13859512-n重力梯度
同一义项的词语：重力梯度
a gradient in the gravitational forces acting on different parts of a nonspherical object; "the gravity gradient of the moon causes the ocean tides on Earth"
义项编号 13859925-n温度梯度
同一义项的词语：温度梯度
change in temperature as a function of distance (especially altitude)
义项编号 13860145-n推论
同一义项的词语：推论
a logical relation between propositions p and q of the form `if p then q'; if p is true then q cannot be false
义项编号 13860281-n三维形状、立体、立方体
a three-dimensional shape
义项编号 13860793-n二维形状、平面
(mathematics) an unbounded two-dimensional shape; "we will refer to the plane of the graph as the X-Y plane"; "any line joining two points on a plane lies wholly on that plane"
义项编号 13861050-n笛卡尔空间
同一义项的词语：笛卡尔空间
a plane in which all points can be described in Cartesian coordinates
义项编号 13861449-n一个平面
同一义项的词语：一个平面
the plane of a facet of an object (as of a cube)
义项编号 13861580-n中平面
同一义项的词语：中平面
the median plane of the body (or some part of the body)
义项编号 13861686-n轴平面
同一义项的词语：轴平面
(astronomy) the plane on which a body is orbiting
义项编号 13861806-n像面、图面、描述平面
the plane that is in the foreground of a drawing or painting; coextensive with but different from the objective surface of the work
义项编号 13861934-n正切面
同一义项的词语：正切面
the plane that contains all the lines tangent to a specific point on a surface
义项编号 13862144-n自然面
同一义项的词语：自然面
a shape created by natural forces; not man-made
义项编号 13862282-n叶形
同一义项的词语：叶形
any of the various shape that leaves of plants can assume
义项编号 13862407-n向外张开
同一义项的词语：向外张开
a shape that spreads outward; "the skirt had a wide flare"
义项编号 13862644-n几何图形
同一义项的词语：几何图形
a combination of points and lines and planes that form a visible palpable shape
义项编号 13862780-n光线锥、束、线束
a figure formed by a set of straight lines or light rays meeting at a point
义项编号 13863020-n平面图形
同一义项的词语：平面图形
a two-dimensional shape
义项编号 13863186-n立体形状
同一义项的词语：立体形状
a three-dimensional shape
义项编号 13863473-n子图形
同一义项的词语：子图形
a figure that is a part of another figure
义项编号 13863602-n线
同一义项的词语：线
a length (straight or curved) without breadth or thickness; the trace of a moving point
义项编号 13863771-n凸状、凸面
a shape that curves or bulges outward
义项编号 13864153-n弧面
同一义项的词语：弧面
a slight convexity (as of the surface of a road)
义项编号 13864423-n圆柱收分曲线、圆柱收分线、柱上的微凸线
a slight convexity in the shaft of a column; compensates for the illusion of concavity that viewers experience when the sides are perfectly straight
义项编号 13864542-n多尖角、多角、尖角、成角状、有角、棱角、角形
同一义项的词语：多尖角、多角、尖角、成角状、有角、棱角、角形
a shape having one or more sharp angles
义项编号 13864763-n中央凹陷、凹状
a shape that curves or bends inward
义项编号 13864965-n圆柱、圆柱体、柱、柱体
a solid bounded by a cylindrical surface and two parallel planes (the bases)
义项编号 13865298-n圆形
同一义项的词语：圆形
a shape that is curved and without sharp angles
义项编号 13865483-n球形物
同一义项的词语：球形物
a rounded spherical form
义项编号 13865786-n心、心形、心形物
a plane figure with rounded sides curving inward at the top and intersecting at the bottom; conventionally used on playing cards and valentines; "he drew a heart and called it a valentine"
义项编号 13865904-n多角形、多边形
a closed plane figure bounded by straight sides
义项编号 13866144-n正多边形、等角多边形
an equiangular polygon
义项编号 13866515-n凸多边形
同一义项的词语：凸多边形
a polygon such that no side extended cuts any other side or vertex; it can be cut by a straight line in at most two points
义项编号 13866626-n凹多边形
同一义项的词语：凹多边形
a polygon such that there is a straight line that cuts it in four or more points
义项编号 13866827-n凹多边形
同一义项的词语：凹多边形
a polygon with one or more reentrant angles
义项编号 13867005-n正多边形
同一义项的词语：正多边形
a polygon with all sides and all angles equal
义项编号 13867133-n变形、扭曲
a shape resulting from distortion
义项编号 13867276-n无定形
同一义项的词语：无定形
an ill-defined or arbitrary shape
义项编号 13867492-n曲线
同一义项的词语：曲线
the trace of a point whose direction of motion changes
义项编号 13867641-n封闭曲线
同一义项的词语：封闭曲线
a curve (such as a circle) having no endpoints
义项编号 13868248-n简单封闭性状
同一义项的词语：简单封闭性状
a closed curve that does not intersect itself
义项编号 13868371-nS形
同一义项的词语：S形
a double curve resembling the letter S
义项编号 13868515-n垂曲线、悬链线
the curve theoretically assumed by a perfectly flexible and inextensible cord of uniform density and cross section hanging freely from two fixed points
义项编号 13868607-n双弧形线条
同一义项的词语：双弧形线条
the double curve of the upper lip when considered to resemble Cupid's bow
义项编号 13868813-n波形、波浪形、波状轮廓
an undulating curve
义项编号 13868944-n拱背线
同一义项的词语：拱背线
the exterior curve of an arch
义项编号 13869045-n曲如鹅颈之线
同一义项的词语：曲如鹅颈之线
something in a thin curved form (like the neck of a goose)
义项编号 13869129-n拱腹线
同一义项的词语：拱腹线
the interior curve of an arch
义项编号 13869243-n弯、弯曲、弯曲部分
a circular segment of a curve; "a bend in the road"; "a crook in the path"
义项编号 13869327-n钩形
同一义项的词语：钩形
a sharp curve or crook; a shape resembling a hook
义项编号 13869547-n钩回
同一义项的词语：钩回
(biology) any hook-shaped process or part
义项编号 13869676-n包络线
同一义项的词语：包络线
a curve that is tangent to each of a family of curves
义项编号 13869788-n弓形
同一义项的词语：弓形
a bend or curve (especially in a coastline)
义项编号 13869896-n直线
同一义项的词语：直线
a line traced by a point traveling in a constant direction; a line of zero curvature; "the shortest distance between two points is a straight line"
义项编号 13869991-n大地线、最短程线、测地线
(mathematics) the shortest line between two points on a mathematically defined surface (as a straight line on a plane or an arc of a great circle on a sphere)
义项编号 13870414-n垂直线、垂线、正交线
a straight line at right angles to another line
义项编号 13870680-n纽带、连接物
a connecting shape
义项编号 13870805-n渐近线
同一义项的词语：渐近线
a straight line that is the limiting value of a curve; can be considered as tangent at infinity; "the asymptote of the curve"
义项编号 13870935-n切线
同一义项的词语：切线
a straight line or plane that touches a curve or curved surface at a point but does not intersect it at that point
义项编号 13871134-n割线
同一义项的词语：割线
a straight line that intersects a curve at two or more points
义项编号 13871338-n周、周界
a line enclosing a plane areas
义项编号 13871452-n半径
同一义项的词语：半径
a straight line from the center to the perimeter of a circle (or from the center to the surface of a sphere)
义项编号 13871538-n直径
同一义项的词语：直径
a straight line connecting the center of a circle with two points on its perimeter (or the center of a sphere with two points on its surface)
义项编号 13871717-n中线
同一义项的词语：中线
a line that bisects a plane figure
义项编号 13871967-n圆顶
同一义项的词语：圆顶
a concave shape whose distinguishing characteristic is that the concavity faces downward
义项编号 13872072-n凹形
同一义项的词语：凹形
a concavity in a surface (especially an anatomical depression)
义项编号 13872211-n凹处、凹陷、凹面、小凹陷
a small concavity
义项编号 13872421-n圆锥体、锥、锥面
a shape whose base is a circle and whose sides taper up to a point
义项编号 13872592-n漏斗状物、漏斗状的东西
a conical shape with a wider and a narrower opening at the two ends
义项编号 13872822-n二次曲线、圆锥曲线
(geometry) a curve generated by the intersection of a plane and a circular cone
义项编号 13872975-n交叉点
同一义项的词语：交叉点
a point or set of points common to two or more geometric configurations
义项编号 13873213-n椭圆形、长圆形
a plane figure that deviates from a square or circle due to elongation
义项编号 13873361-n椭圆形
同一义项的词语：椭圆形
ellipse in which the two axes are of equal length; a plane curve generated by one point moving at a constant distance from a fixed point; "he calculated the circumference of the circle"
义项编号 13873502-n小圈
同一义项的词语：小圈
a small circle
义项编号 13873849-n圆周
同一义项的词语：圆周
something approximating the shape of a circle; "the chairs were arranged in a circle"
义项编号 13873917-n中纬线、赤道
a circle dividing a sphere or other surface into two usually equal and symmetrical parts
义项编号 13874073-n半圆、半圆形、半圆物
a plane figure with the shape of half a circle
义项编号 13874251-n弧
同一义项的词语：弧
a continuous portion of a circle
义项编号 13874384-n圆锯齿、圆锯齿状、圆齿、圆齿状
one of a series of rounded projections (or the notches between them) formed by curves along an edge (as the edge of a leaf or piece of cloth or the margin of a shell or a shriveled red blood cell observed in a hypertonic solution etc.)
义项编号 13874558-n弦
同一义项的词语：弦
a straight line connecting two points on a curve
义项编号 13874927-n扇形
同一义项的词语：扇形
a plane figure bounded by two radii and the included arc of a circle
义项编号 13875027-n圆平面、圆盘形、圆盘状物
something with a round shape resembling a flat circular plate; "the moon's disk hung in a cloudless sky"
义项编号 13875185-n环、环状物
a toroidal shape; "a ring of ships in the harbor"; "a halo of smoke"
义项编号 13875392-n圈、环、环状物
anything with a round or oval shape (formed by a curve that is closed and does not intersect itself)
义项编号 13875571-n绳圈、绳扣
a loop in a rope
义项编号 13875884-n卷、卷曲、旋曲、螺纹
a round shape formed by a series of concentric circles (as formed by leaves or flower petals)
义项编号 13875970-n蜷线、螺旋形、螺线
a plane curve traced by a point circling about the center but at increasing distances from the center
义项编号 13876371-n螺旋、螺旋线
a curve that lies on the surface of a cylinder or cone and cuts the element at a constant angle
义项编号 13876561-n二重螺旋线、双螺旋、双螺旋线
a pair of parallel helices intertwined about a common axis; "the shape of the DNA molecule is a double helix"
义项编号 13876753-n倒错
同一义项的词语：倒错
a curve that reverses the direction of something; "the tendrils of the plant exhibited perversion"; "perversion also shows up in kinky telephone cords"
义项编号 13876921-n偏心率、离心率
(geometry) a ratio describing the shape of a conic section; the ratio of the distance between the foci to the length of the major axis; "a circle is an ellipse with zero eccentricity"
义项编号 13877129-n形状的母线
同一义项的词语：形状的母线
a straight line that generates a cylinder or cone
义项编号 13877408-n锥形母线
同一义项的词语：锥形母线
a straight line joining the apex and a point on the base
义项编号 13877547-n柱形母线
同一义项的词语：柱形母线
a straight line running the length of the cylinder
义项编号 13877667-n螺旋角
同一义项的词语：螺旋角
the constant angle at which a helix cuts the elements of a cylinder or cone
义项编号 13877785-n扭曲
同一义项的词语：扭曲
a sharp bend in a line produced when a line having a loop is pulled tight
义项编号 13877918-n