Realizes V. 29 signal basic modulate and demodulate procedure which includes square root raised cosine rolling-off shaping filter and orthogonal channel signal modulator and demodulator.

分别实现了V．29信号基本调制解调过程，包括平方根升余弦滚降脉冲成形技术的滤波器实现，以及对信号的正交调制与解调过程。

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He stumbled suddenly and fell, rolling off the road into a melting patch of snow.

他突然一个趔趄，跌到在地，滚到了一堆还没化尽的积雪上。

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In the rolling countryside of Idstein on a recent rainy morning, parents dropped off their children at a muddy parking lot a bit after 8 as the temperature hovered around 40 degrees Fahrenheit.

不久前一个下雨的早晨，8点刚过，在Idstein地势起伏的郊区，家长们开车载着他们的孩子到了一个泥泞的停车场。当时的温度只有华氏40度。

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If less than 1% of MTV's potential viewers around the world switched to three energy-efficient light bulbs, it would be equivalent to taking 100, 000 cars off the road, Roedy adds, the well-rehearsed statistics rolling off his tongue.

FORBES: MTV's Green Crusade

So what was just an idea two decades ago is now rolling off assembly lines in cutting-edge fuel efficient cars that you can plug in at night.

WHITEHOUSE: President Obama Speaks on American Energy

You can rest assured that hundreds -- if not trillions -- of new laptops will be rolling off of production lines this quarter with Intel's Sandy Bridge platform inside, and those looking for a little love over in Japan won't have to wait much longer.

ENGADGET: Panasonic adds Sandy Bridge to Let's Note J10, N10, S10 and B10 laptops