si·nu·soi·dal /ˌsaɪnjəˈsɔɪdḷ, ˌsaɪnə-/
(a.)正弦曲線,竇狀隙,竇狀小管
si·nu·soi·dal /ˌsaɪn(j)əˈsɔɪdḷ/ 形容詞
正弦式的,竇狀的
Si·nus·oid·al a. Geom. Of or pertaining to a sinusoid; like a sinusoid.
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sinusoidal
adj : having a succession of waves or curves