The new technologies of mass dissemination could reach large numbers of people with unprecedented speed and efficiency, but put control of the flow of information into the hands of a select few.
大规模传播的新技术以前所未有的速度和效率影响到大量的人，但是它却将信息流动的控制权交给少数被选拨出来的人手里。
Frequency control the use of fans, water pumps, type of machinery to carry out speed control method to regulate the flow of energy conservation, economic efficiency is very important significance.
采用变频调速控制，对风机、水泵类机械进行转速控制来调节流量的方法，对节约能源，提高经济效益具有非常重要意义。
The flow of each axle bush applies speed control valve to regulate, with high precision and low interference effect.
每个轴瓦的流量采用调速阀进行调节，精确度高，互相干扰小。
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