单词:haors
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Most of them travel 40,000 miles to a satellite and then back to earth. Ten years ago, a satellite was capable of receiving and transmitting more than 33,000 telephone conversations simultaneously. No
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EXPLORATIONS - 'Houston, We've Had a Problem Here': The Survival of Apollo 13By Marilyn Rice Christiano and directed by Paul Thompson Broadcast: Wednesday, August 30, 2006 ANNOUNCER: EXPLORATIONS -- a
BRI Basic Rate Interface 基本速率接口 BRI是最基本的用户/网络接口标准,一般包括一个D通道及两个B通道,称为2B+D。两条B信道可独立传输用户信息,D信道则传
Promoting connectivity and cooperation in informational communication between China and Africa is high on the agenda of this year's FOCAC Beijing Summit. The collaboration is being pushed greatly by a free digital television project of China in rural
32 阿波罗登月计划(二) DATE=4-18-01 TITLE=EXPLORATIONS #1948 - PROJECT APOLLO (PART TWO): APOLLO THIRTEEN BYLINE=MARILYN RICE CHRISTIANO ANNCR: Explorations --- a program in special English by