adj.逆時(shí)針轉(zhuǎn)的
adv.逆時(shí)針方向
Positive frequencies are produced by anticlockwise rotation and negative frequencies by clockwise rotation. 正頻率是用逆時(shí)針旋轉(zhuǎn)來(lái)產(chǎn)生，而負(fù)頻率是用順時(shí)針旋轉(zhuǎn)來(lái)產(chǎn)生。
