低频的地震道和长偏移距道都是切除的目标。

Low-frequency traces and long-offset traces are typical targets for muting.

youdao

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.

youdao

这是个很客观的观点，而我想着，还得多久人们才能给自行车装一个低频的铃声来防止刹车事故。

It's a fair point, and I wonder how long it will be before someone installs a low-frequency hum to the bikes to prevent pedestrians from being mowed down.

youdao

We had that very interesting piece last time, "Polish Oxcart" where he used this principle of low sounds produce sound waves that stay forever and we hear those low sounds first and last.

上次我们听了一段很有意思的曲子,《牛车》,当时他运用低频声音,持续时间长的原理,我们在最初和最后听到的都是低音

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