这种频率属于极低频的频率范围内，通常极低频的频带范围也在300hz以下。
This falls in the extremely low frequency (ELF) range which includes frequencies up to 300 Hz.
众多研究表明，暴露在极低频率电磁场的儿童罹患白血病的风险增加，但极低频率电磁场似乎不增加乳腺癌和心血管疾病的发病风险。
Studies have consistently shown increasing risk for childhood leukemia associated with ELF-EMF, whereas ELF-EMF most likely are not a risking factor for breast cancer and cardiovascular disease.
谷歌的VR音频系统模拟这些闭塞效应治疗高和低频率成分不同，高频区被屏蔽比低频率。
The Google VR audio system simulates these occlusion effects by treating high and low frequency components differently, with high-frequencies being blocked more than low frequencies.
其次，提出了一种自动调整低频减载装置动作频率值的理论，低频减载装置将根据局部频率最大终值和最小终值来改变其设定值。
Secondly, a theory that can automatically adjust the action frequency of UFLS device is applied. UFLS device can adjust setting value by maximal and minimum final value of local frequency.
其次，提出了一种自动调整低频减载装置动作频率值的理论，低频减载装置将根据局部频率最大终值和最小终值来改变其设定值。
Secondly, a theory that can automatically adjust the action frequency of UFLS device is applied. UFLS device can adjust setting value by maximal and minimum final value of local frequency.
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