low-frequency zone energy  低频带能量

the energy ratio of a high frequency band to a low one  高低频段能量比

3060 day low-frequency oscillation  30-60天低频振荡

3-phase low frequency  三相低频

active low-frequency filter  有源低通滤波器

Adjustment to wavelet low-frequency component  小波低频分量微调

Analysis of Low-frequency Protection Test  浅析低频保护测试

anomaly of extra-low-frequency electromagnetic wave  超低频电磁异常

Atmospheric low-frequency oscillation  大气低频振荡

Atmospheric Low-frequency system  低频天气系统

Atmospheric low-frequency wave  大气低频波

atmospherical low-frequency oscillation  大气低频振荡

atmospheric-pressure radio-frequency low-temperature plasma  常压射频低温等离子体

automatic low frequency load shedding relay  自动低频减载继电器

braking with low frequency  低频制动

Broad Band Low Frequency  低频宽带

Broad Band Low Frequency Amplifier  宽带低频放大器

broad-beam low-energy ion sources  低能宽束离子源

building low energy  省能建筑