| 释义 |
DEFINITIVE EXAMPLES 权威例句〔cyclometer〕An instrument that measures circular arcs.圆弧测定器：一种用于测定圆弧的仪器美国传统〔secant〕The straight line drawn from the center through one end of a circular arc and intersecting the tangent to the other end of the arc.正割线：从圆心引出的经过圆弧一个端点并与另一端点正切交割的直线美国传统 |