“SSMEC”是“Space Shuttle Main Engine Controller”的

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“SSMECA”是“Space Shuttle Main Engine Controller

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“SSN”是“Sun Spot Number”的缩写，意思是“太阳光斑数”

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“SSO”是“Safety Signification Operation”的缩写，意思

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“SSO”是“Source Selection Official”的缩写，意思是“资

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“SSO”是“Space Shuttle Orbiter”的缩写，意思是“航天飞

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“SSO”是“Subsystem Operation (in Spacelab)”的缩写，

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“SSO”是“Support System for OEX”的缩写，意思是“OEX支

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“SSOP”是“Space Systems Operating Procedures”的缩写

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“SSP”是“Small Sortie Payload”的缩写，意思是“小型架

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