But text messages are not just tiny; they are also free riders, tucked into what's called a control channel, space reserved for operation of the wireless network.
不过短信可不仅仅是微小，它们还是搭便车者，硬挤进了为无线网络运营而预留的信道里面。
Automatic Generation control (AGC) is one of basic operation control technique of modern power network.
自动发电控制(agc)是现代电网运行控制的基本技术之一。
This Paper puts emphasis on the change trend of automobile sales channels from four aspects; control, network, operation and construction.
本文从控制、网络、运作和建设四方面论述了我国汽车销售渠道的变化趋势。
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