单词:frequency shift track circuit
单词:frequency shift track circuit 相关文章
Delay - This is the wait time between to specific events, and regarding satellite communications, it is the time it takes for a signal to go from the transmission station up to orbit and through the s
Exercise 10-1 : When S Becomes Z CD 4 Track 31 Under Contrast, in the list that follows, notice how the voiced wordis drawn out and then repeat theword after me. Both voiced and unvoiced diphthongs have the underlying structure of the tone shift,or t
今天我们要讲几个在美国总统大选的竞选阶段常会用到的习惯用语。美国总统大选每四年举行一次。在大选年的前一年,准备竞争本党总统候选人提名的人士就已经在各州积极展开竞选活动了,
U.S. first lady Michelle Obama spent some time Saturday answering calls from children across the country who were hoping to find out where Santa Claus was on Christmas Eve. Just as she did last year, the first lady took calls from the NORAD Tracks Sa
SAN JOSE, Dec. 23 (Xinhua) -- Colombian cyclist Oscar Sanchez took the lead Sunday in the 48th edition of the Costa Rica Tour, clocking the fastest time in the seventh leg of the 12-stage competition. Sunday's race featured a grueling 18-kilometer up
Improving London The Olympic games hope to regenerate a poor part of London and make it better with jobs, homes, shops and transport links. These will last for a hundred years or more, not just for a few weeks in the summer. The different buildings a