frequency period

Demand charge shift from the on-peak period to the off-peak period

audio frequency and video frequency processing

correlation in frequency domain and frequency domain

High frequency and low frequency

Low Frequency and Acoustic Frequency

Low Frequency and Medium Frequency Therapy Equipment

theoretical frequency and actual frequency

11th Five Year Scheme Period

11th-Five-Year Plan Period

12th five-year plan period

5.4 period

Golden period of development

Left-wing Federation period

″later period negotiation″ algorithm

11th Five Years Period

11th-five plan period

11-year period

12 th five-year period

2002~2004 period