短語詞組短語tooth profile curve equation 齒廓曲線方程tooth back curve 齒背曲線;齒背曲線的inverse rhythm tooth curve 反韻律齒形曲線saw -tooth curve 鋸齒形曲線tooth curve error 齒曏誤差tooth -outline curve 齒廓曲線Gear tooth curve 齒輪齒形曲線;齒齒形曲線tooth profile scroll curve 齒廓蝸形曲線 返回 tooth curve