单词：effective shank length
单词：effective shank length 相关文章
The first steps are being taken to establish a Space Force as the sixth branch of the American armed forces. The ultimate objective, said Vice President Mike Pence in a recent speech at the Pentagon, is to create a new branch of our military that is
VOA标准英语2018年(八月)
Welcome to Words and Their Stories, from VOA Learning English. On this program we explore common expressions in American English. Like all languages, our expressions come from everywhere. They come from nature, sports, and food. They come from money,
2018年VOA慢速英语(七)月
The first steps are being taken to establish a Space Force as the sixth branch of the American armed forces. The ultimate objective, said Vice President Mike Pence in a recent speech at the Pentagon, is to create a new branch of our military that is
VOA标准英语2018年(八月)
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
电信英语
今天我们要学的词是public domain。 Public domain, 公共领域。 When a work is in the public domain, it can be used by anyone and for any purpose without restrictions, 公共领域内的作品，任何人都可以不受限制地用于任何目
英语每日一词
Air Force Tracks Final Frontier 未来太空三种战略趋势 Theres three strategic trends that I see in space. 我在太空中看到了三种战略趋势。 General Jay Raymond, Commander of Air Force Space Command in Colorado Springs. He recently
2018年科学美国人1月