正弦曲線,竇狀隙,竇狀小管
Sinusoid \Si"nus*oid\, n. [Sinus + -oid.] (Geom.) The curve whose ordinates are proportional to the sines of the abscissas, the equation of the curve being y = a sin x. It is also called the {curve of sines}.
sinusoid n 1: tiny endothelium-lined passages for blood in the tissue of an organ 2: the curve of y=sin x [syn: {sine curve}]