High Mid and low Mid dials (blue) are each paired with a freq control (lighter blue) that allows you to select the frequency boosted or cut.

低中高表盘(蓝色)与一个引入FREQ控制(淡蓝色每个配对)，允许你选择的频率提高或降低。

youdao

NW-SE wavetrain runs from Ural to mid Asia and then to East Asia and the low-frequency vortices of Ural origin travel southward and then eastward, leading to the change in phase of the wavetrain.

从乌拉尔经中亚到东亚存在一个西北一东南向的波列，源自乌拉尔地区的低频涡旋先是向南然后向东移动导致波列位相的转变。

youdao

Under the hood, PLAYBAR gets its punch from nine individually amplified speakers: six mid-woofers to deliver deep, rich low-frequency sounds, and three tweeters for crystal clear high-frequency detail.

ENGADGET: Sonos Playbar: a home theater soundbar that wirelessly streams music for $699, we go hands- (and ears) on