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