[数] 拓扑空间的孤立点

AS IT IS 2015-09-20 NASA’s Astronauts Reach Halfway Point of Year in Space

AS IT IS 2015-09-20 NASAs Astronauts Reach Halfway Point of Year in Space Right now, as you go about your business, two humans are passing above you in outer space. American astronaut Scott Kelly and Russian cosmonaut Mikhail Kornienko reached the ha

发表于:2019-01-12 / 阅读(41) / 评论(0)

2015年VOA慢速英语(九)月

AS IT IS 2016-02-26 Astronaut Scott Kelly Talks about His Year in Space

AS IT IS 2016-02-26 Astronaut Scott Kelly Talks about His Year in Space For nearly a year, American astronaut Scott Kelly has been living and working at the International Space Station (ISS), with no running water. He told reporters Thursday that it

发表于:2019-01-12 / 阅读(43) / 评论(0)

2016年VOA慢速英语(二)月

计算机-数据结构基本英语(4)

拓扑排序 topological sort 偏序 partical order 拓扑有序 topological order AOV网 activity on vertex network AOE网 activity on edge network 关键路径 critical path 匹配 matching 最大匹配

发表于:2019-02-01 / 阅读(58) / 评论(0)

实用英语

Space Shuttle Endeavor Ready for its Last Mission

People are flocking to the central Florida coast for Friday's scheduled launch of the space shuttle Endeavour(奋进号) , the second to last launch of a shuttle as NASA brings the three-decade-old program to an end. The space agency is expecting aro

发表于:2019-02-07 / 阅读(29) / 评论(0)

英语新闻

AS IT IS 2016-03-03 Kelly, Kornienko Land on Earth after Year in Space

AS IT IS 2016-03-03 Kelly, Kornienko Land on Earth after Year in Space Scott Kelly and Mikhail Kornienko have their feet on the ground for the first time in 340 days. Riding in a Russian spacecraft, they made it back to Kazakhstan, along with a fello

发表于:2019-02-12 / 阅读(132) / 评论(0)

2016年VOA慢速英语(三)月

Step by Step 3000 第2册 Unit11:Space(3)

Part 3. Compton Gamma Ray Observatory. Keywords. ailing observatory, orbit, gamma rays. Vocabulary. debris, thruster, gyroscope, bathe, stream from, Compton Gamma Observatory, Goddard Space Flight Center. Now listen to a news report, complete the new

发表于:2019-02-15 / 阅读(40) / 评论(0)

Step by Step 3000 第二册

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