单词:time-signals
单词:time-signals 相关文章
FAITH LAPIDUS: This is SCIENCE IN THE NEWS, in VOA Special English. I'm Faith Lapidus. BOB DOUGHTY: And I'm Bob Doughty. This week, we tell about the disease multiple sclerosis. (MUSIC) FAITH LAPIDUS: Multiple sclerosis is not easy to say. Those who
03 Ending a Bad Date GLOSSARY from hell horrible; as bad as something can possibly be; extremely unpleasant * Ive had a day from hell: I ran out of gas in my car,I spilled my coffee on my pants, I lost my keys, and my wallet was stolen. creep an unpl
Three radio stations in the United States mainly broadcast one thing: the official time. The three are radio stations WWV and WWVB, in the state of Colorado, and WWVH, on the island of Kauai in Hawaii. They send out signals that are used by millions
Frame In time division multiplexing systems, Frame is a sequence of time slots each containing a sample from one of the channels carried by the system. The frame is repeated at regular intervals, (nor
VOICE ONE: This is SCIENCE IN THE NEWS in VOA Special English. I'm Faith Lapidus. VOICE TWO: And I'm Bob Doughty. This week, we tell about the disease multiple sclerosis. (MUSIC) VOICE ONE: Joan Molenaar helps her husband Larry, a victim of multiple
Science and technology 科学技术 Searching for aliens 寻找外星人 The wow factor 防止再次意外 A new citizen-science project will improve the chances of finding ET 一个新的平民科学项目可以增大找到地外智慧的机会 EVER