A.
相邻两个波节之间的所有质元振动具有相同的相位;The vibration of all elements between two adjacent nodes has the same phase;
B.
相邻两个波节之间的所有质元振动具有相同的振幅;The vibration of all elements between two adjacent nodes has the same amplitude;
C.
相邻两个波节之间的所有质元振动具有相反的相位;The vibration of all elements between two adjacent nodes has opposite phase;
D.
相邻两个波节之间的所有质元振动具有不同的频率;The vibration of all elements between two adjacent nodes has different frequencies;