常見(jiàn)例句用作名詞 (n.)The voltage requires being smooth and stable sine wave.其工作電壓要求是平滑而穩(wěn)定的正弦波。The cosine rather than the sine is customarily used in this case.在這種情況下，習(xí)慣上用餘弦函數(shù)而不是正弦函數(shù)。 返回 sine