courier 1b造句

• Courier 1B, built by Philco, also launched in 1960, was the world's first active repeater satellite.
• "' Courier 1B "'was the world's first active repeater satellite after launch on 4 October 1960.
• It was used to send a Christmas greeting to the world from U . S . President Dwight D . Eisenhower .; Courier 1B, built by Philco, launched in 1960, was the world's first active repeater satellite.
• The U . S . soon had a number of successful satellites, including Explorer 1, Project SCORE, and Courier 1B . However, public reaction to the Sputnik crisis led to the creation of the Advanced Research Projects Agency ( renamed the Defense Advanced Research Projects Agency or DARPA in 1972 ), NASA, and an increase in U . S . government spending on scientific research and education.