In extended use and figurative. Originally U.S.A.F. slang. An area compared to a ballpark in size or extent; spec. (Astronautics) the area of…
| 单词 | θ207509 |
| 释义 | society > travel > air or space travel > space flight > [noun] > a space shot or flight > slow landing without damage > expected landing area (3) ballpark1943 In extended use and figurative. Originally U.S.A.F. slang. An area compared to a ballpark in size or extent; spec. (Astronautics) the area of… recovery area1943 U.S. Military and Astronautics. A designated area on the ground or at sea within which recovery of a person, craft, etc., is to be effected, esp… footprint1962 Astronautics. The area within which a spacecraft is intended or predicted to land, typically having the form of a trapezium (sometimes likened to… |
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