For example, if the digital TV channel is channel 53, then 53.1, 53.2 and 53.3 could be three sub-channels on that channel.

对于数字频道53来说，53.1，53.2，53.3就是它的三个子频道。

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Each broadcaster has one digital TV channel, but one channel can carry multiple sub-channels if the broadcaster chooses that option. Here's how it works.

每个广播商有一个数字频道，但只要广播商愿意，每个频道能携带多个子频道(sub - channel)。

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When the load is serious unbalanced, each sub-channel still keeps high volumetric efficiency and equal flow.

在各油缸支路出现严重负载不平衡时，仍保持高容积效率和相同流量。

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For Facebook, the hope is that by slashing clutter and making content more aesthetically pleasing, users will spend more minutes on the site, clicking through on stories and exploring both the main news-feed channel, and the sub-feeds that appeal to their particular interests.

WSJ: Facebook Unveils Sweeping Changes to News Feed

The BRAVEN SIX Series speakers have two custom extended-range drivers and 3 watt speaker output providing high-fidelity stereo audio with left- and right-channel passive sub woofers.

ENGADGET: Braven Six Series speakers offer Bluetooth audio, wired charging