标签：antenna 相关文章
A lot of stuff we use goes up and down the Mississippi River. We are talking steel, coal, ore, grain. The problem is now a lot of those barges had had to lighten their loads, and even doing that, they are still running aground. There is a real fear t
CNN2012年(八)月
[00:03.28]- My wife on? - Yes, Captain. 我老婆连线了吗？ 是的，队长 [00:07.56]- My ladies! - Look. 我的老婆女儿 [00:09.44]Oh, my goodness. Look at her. She's getting so big. 看看她，她长得好大 [00:10.88]Look at those cheek
听电影学英语-变形金刚
Origami Space Technology Combines Art, Design, Science Since he was eight years old, Robert Salazar has been making artistic creations from folded paper. Now, he is taking his love of origami to a different place: outer space. Salazar works with the
2017年VOA慢速英语(十一)月
He had approached the villa on that night of the storm not out of curiosity about the music but because of a danger to the piano player. The retreating army often left pencil mines within musical instruments. Returning owners opened up pianos and los
有声英语文学名著
Topics: The American Indian Movement of the 1970s; Famous Buildings-The Sears Tower; inception versus conception versus to beget; to get back; cash on the barrelhead Words: to relocate reservation Civil Rights Movement specialized to occupy demand to
美语听力 English Cafe
哈皮和安德鲁今天讨论的主题是，手机已经被广泛应用开来，第一代手机还是很大的那种，现如今每人一部手机，那到底手机是方便了人们的沟通还是阻碍了人们的沟通呢？ Harp: Dont depress me
话匣子英语
News Report Latest Space Walk from Space Station Script American astronaut Carl Walz and Russian cosmonaut Yuri Onufrienko took their first space walk outside of an international space station on Monday. Their mission was to move a construction crane
新视野大学英语：视听说教程 4
There is of course a great deal we don't know, and much of what we think we know we haven't known, or thought we've known, for long. Even the notion of the Big Bang is quite a recent one. 当然，有大量的事情我们不知道，还有大量的事情
万物简史
Cassegrain Antenna - An antenna that places a subreflector at the focal point to reflect energy to or from a feed located at the apex of the main reflector. CB - This stands for Citizen's Band and is
电信英语
Earth Station - The term used to describe the combination of antenna, low-noise amplifier (LNA), down-converter, and receiver electronics that are used to receive a signal transmitted by a satellite.
电信英语
Analog - Transmitting information that is characterized by continuously variable quantities (such as with AM or FM). This is different from digital transmission, which is characterized by discrete bit
电信英语
US space agency NASA has successfully located India's first lunar spacecraft Chandrayaan-1 that lost contact with ground controllers on Earth eight years ago. 日前，美国航天局NASA已经成功定位到印度首艘月球太空船--月球飞船一
英语新闻
Spirit Getting Ready to Roam the Red Planet David McAlary The U.S. robot rover Spirit is finally standing up on Mars and nearly ready to drive off the lander onto the red planet's surface. Surface exp
VOA2004（上）--各类新闻
Antenna 天线 An antenna is used for radio, television, radar and so on. 天线用于广播、电视、雷达等等。 It works in air and under the water. 它适用于空中和水下。 Antennas send signals and receive signals. 天线发送和接收
与美国小学生一起学英文第4册
It is known as Cadillac One and 'The Beast' or, as President Trump now calls it, his personal limousine service. 它被称为凯迪拉克一号和野兽，如今成为特朗普乘用的豪华轿车。 These pictures show the brand new incarnation of
英语新闻
launch a satellite 发射卫星 launch pad 发射台 multistage rocket 多级火箭 second stage 第二级 third stage 第三级 orbit 轨道 artificial satellite 人造卫星 Telstar 通信卫星 ante
英文语法词汇
along prep. 沿着ad. 向前走 解析：表示沿着或向前走,一般指沿着一个线性的方向 along with 与……一起 alongside prep. 在……旁边,并肩 alphabet n. 字母表,字母系统
英文语法词汇
After losing communication with a space probe two years ago, NASA says it has reestablished contact. 在和一颗卫星失联长达两年之后，美国宇航局日前宣布，已和它重新取得了联系。 NASA said it lost contact with the Solar
英语新闻
第一部分 阅读理解 (75分) Passage 1 CATV is a short way of saying
实用英语
The 26-page publication called Fixing Intel: A Blueprint for Making Intelligence Relevant in Afghanistan says military intelligence efforts in the country over the past eight years have been token and ineffectual, and have not provided commanders or
VOA标准英语2010年(一月)