单词	sine curve
释义	sine curve noun : the graph in rectangular coordinates of the equation y . a sin bx where a and b are constants that when a . 1 and b . 1 passes through the origin and all points on the x-axis where the abscissas are multiples of π radians, is concave towards the x-axis, and has maximum and minimum ordinate values of +1 and -1 [sine curve: graph of y=a sin bx where a=1, b=1]
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