| 单词 | 圆周 |
| 释义 | DEFINITIVE EXAMPLES 权威例句〔COUNT/CALCULATE〕Early mapmakers often underestimated the earth's circumference. 早期的地图制作者常常对地球的圆周估算过低。朗文写作活用〔arc〕Mathematics A segment of a circle.【数学】 弧：圆周的一段美国传统〔cardioid〕A heart-shaped plane curve, the locus of a fixed point on a circle that rolls on the circumference of another circle with the same radius.心脏线：一种心形的平滑曲线，圆周上一固定点绕另一具有相同半径的圆的圆周转动的轨迹美国传统〔center〕A point equidistant from all points on the circumference of a circle or on the surface of a sphere.圆心，球心：与一圆周上或一球面上所有点等距的一点美国传统〔circular〕Place your hands on your shoulders and move your elbows up, back, and down, in a circular motion.双手置于肩上, 肘部向上、向后, 再向下, 做圆周运动。外研社新世纪〔circumference〕The boundary line of a circle.圆周：一个圆的边界线美国传统〔cycloid〕Mathematics The curve traced by a point on the circumference of a circle that rolls on a straight line.【数学】 圆滚线，摆线：圆周上任一点在一条直线上滚动时所形成的曲线美国传统〔degree〕There are 360 degrees in a circle.圆周是360度。韦氏高阶〔diameter〕A straight line segment passing through the center of a figure, especially of a circle or sphere, and terminating at the periphery.直径：穿过一图形，特别是圆形或球形的中心到圆周结束的直线段美国传统〔eccentric〕Deviating from a circular form or path, as in an elliptical orbit.偏离轨道运行的：偏离圆周轨道或路线，如椭圆轨道美国传统〔eddy〕A current, as of water or air, moving contrary to the direction of the main current, especially in a circular motion.漩涡：与主流部分流向相反的水流或气流的一部分，尤指以圆周运动方式流动美国传统〔epicycle〕Mathematics A circle whose circumference rolls along the circumference of a fixed circle, thereby generating an epicycloid or a hypocycloid.【数学】 周转圆：一个围绕着另一个固定圆周长滚动的圆，从而产生圆外旋轮线或圆内旋轮线，即外摆线或内摆线美国传统〔epicycloid〕The curve described by a point on the circumference of a circle as the circle rolls on the outside of the circumference of a second, fixed circle.外摆线：一个动圆沿另一个定圆外侧滚动时，动圆圆周上一点的轨迹曲线美国传统〔equidistant〕All points on a circle are equidistant from the centre.圆周上各点离圆心的距离相等。牛津高阶〔equidistant〕Points on a circle are equidistant from its center.圆周上的各点到圆心的距离相等。韦氏高阶〔equidistant〕Points on a circle are equidistant from its centre.圆周上各点与圆心等距。英汉大词典〔given〕Given that the radius is 5 meters, find the circumference.假定半径为五公尺，试求其圆周。文馨英汉〔gyral〕Moving in a circle or spiral; gyratory.旋转的：以圆周或螺旋的方式运动；回旋的美国传统〔gyration〕Circular or spiral motion.圆周或螺旋运动美国传统〔gyratory〕Having a circular or spiral motion.回旋的：作圆周或螺旋式运动的美国传统〔hemisphere〕A half of a sphere bounded by a great circle.半球：一个巨大圆周所包围的球体的一半美国传统〔hypocycloid〕The plane locus of a point fixed on a circle that rolls on the inside circumference of a fixed circle.圆内旋转线，内摆圆：在一个固定的圆周内旋转的圆上一点的水平轨迹美国传统〔place〕They worked out the value of pi to seventy decimal places.他们把圆周率精确到了小数点后70位。外研社新世纪〔quarter〕To mark or place (holes, for example) a fourth of a circle apart.标示区域的四分之一：将（如孔）标在或定在相距圆周的四分之一处美国传统〔radius〕A line segment that joins the center of a circle with any point on its circumference.圆半径：将圆心与圆周上任一连接起来的线段美国传统〔rather〕The process is not a circle but rather a spiral.这个过程不是一个圆周运动而是螺旋上升型的。柯林斯高阶〔ring〕To remove a circular strip of bark around the circumference of (a tree trunk or branch); girdle.环剥：绕着（树干或树枝）的圆周移走一圈树皮；剥去（树木的）一圈皮美国传统〔treadle〕A pedal or lever operated by the foot for circular drive, as in a potter's wheel or sewing machine.踏板：一种由脚操纵带动圆周运动的踏板或杠杆，如制陶者的陶车或缝纫机的踏板美国传统〔whirl〕To move or drive in a circular or curving course.使回旋：使沿圆周或曲线路程运动或驾驶美国传统〔zodiac〕A complete circuit; a circle.圆周；圆美国传统A right angle is one quarter of a full rotation.直角是一个圆周的1/4 。剑桥国际An arc is a part of the circumference of a circle or other curved lines. 弧是圆周或曲线的一部分。译典通Pi expressed to five places of decimals is 3.141 59.圆周率以小数点后五位数表示，为3.141 59 。剑桥国际There is a small overlap between the two circles. 在这两个圆周有一小部分重叠。译典通 |
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