| 释义 |
DEFINITIVE EXAMPLES 权威例句〔cusp〕Mathematics A point at which a curve crosses itself and at which the two tangents to the curve coincide.【数学】 尖点，会切点：曲线上的一个点，曲线在该点与其本身相交，曲线的两条切线在该点重合美国传统〔hurdy-gurdy〕A medieval stringed instrument played by turning a rosined wheel with a crank and depressing keys connected to tangents on the strings.绞弦琴：一种中世纪弦乐器，演奏时转动一个带有曲柄的涂有松香的轮子，按下连着弦上的金属针上的琴键美国传统 |