单词:sf (short wave frequency)
单词:sf (short wave frequency) 相关文章
50.Barbers and Hairdresser's 理发与美发(上) 1.How would you like it cut ,Sir? 2.How do you like it,Sir? 3.Cut it short all round,please. 4.Don't take too much off the top,please. 5.Just a trim,please. 6.Could you give it a good trimming? 7.Fairly sh
Focal Length - Distance from the exact center of the dish to the center of the feed. Focal Point - The physical point in space toward which the satellite reflector dish directs the received signal so
AMERICAN STORIES - Short Story: The Open Boat by Stephen Crane (Part 1) BARBARA KLEIN: Now, the VOA Special English program AMERICAN STORIES. (MUSIC) Our story today is called The Open Boat. It was written by Stephen Crane and is based on what really
Chinese scientists have announced a gravitational wave research plan they're dubbing Taiji. The Chinese Academy of Sciences says their research plans will be finalized later this year. Academy member Wu Yueliang says their research will focus on low
Those waves hitting the sand actually begin far out at sea. And it doesnt take much to get them going. A little wind will do the trick. First the wind blows over the surface of the water, generating the little ripples you can see just by blowing acro