echo 2造句
- Its successor was the similarly built Echo 2 ( 1964 to about 1970 ).
- Echo 2 reentered Earth's atmosphere and burned up on June 7, 1969.
- In January 1964, 1st Lt Ivan Thomas was the DOA for the launch of Echo 2 ( 1964-04A ).
- Of note is that both the Echo 1A and Echo 2 experienced a solar sail effect due to their large size and low mass.
- Unlike Echo 1, Echo 2's skin was rigidizable, and the balloon was capable of maintaining its shape without a constant internal pressure.
- Echo 2, being larger than Echo 1A and also orbiting in a near polar orbit, was conspicuously visible to the unaided eye over all of the Earth.
- Echo 2 was a 41.1-meter ( 135 ft ) diameter metalized PET film balloon, which was the last balloon satellite launched by Project Echo.
- Pageos'predecessors in satellite triangulation were the balloons Echo 1 ( 1960, 30 m ) and Echo 2 ( 1964, 40 m ) which were also used for passive telecommunication.
- They were there from January 2011 until February 2011.3 / 5 cleared and secured Sangin's " Brown zone " and much of the " Green zone ", while Echo 2 / 9 was in command of other parts the southern " Green Zone " . 2 / 9 was relieved by Echo Company, 2D Battalion 8th Marines in February 2011 taking over a portion of the Southern Green Zone.
- It's difficult to see echo 2 in a sentence. 用echo 2造句挺難的
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