The digital first-harmonic detecting method based on this kind of filter can be used in anyone power harmonic compensation system and microcomputer relay protection system.
此滤波器设计的数字基波检测方法可用于任何一种电力系统的谐波补偿和微机继电保护系统中。
The second movement is not as "heavy" as the first making it an excellent relief without losing its harmonic brilliance.
第二乐章不像第一乐章那么“重”，这使它在缓和前面的同时而又不失辉煌。
Thus a smaller membrane gives off a higher first harmonic .
较小的膜发出较高的第一陪音。
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