Chiefly Astronautics. That is initially designated as the crew, vehicle, equipment, etc., in contrast to a backup or reserve; esp. in prime crew n.…
| 单词 | θ208024 | 
| 释义 | society > travel > air or space travel > a means of conveyance through the air > spacecraft > parts of spacecraft > 			[adjective]		 > originally designated (of equipment) (1)		 prime1965 Chiefly Astronautics. That is initially designated as the crew, vehicle, equipment, etc., in contrast to a backup or reserve; esp. in prime crew n.…  | 
	
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