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Method for adjusting stiffness and acoustic properties of an externallymountable spacecraft equipment module?keyword=Method for adjusting stiffness and acoustic properties of an externallymountable spacecraft equipment module?keyword=Method for adjusting stiffness and acoustic properties of an externallymountable spacecraft equipment module?keyword=Method for adjusting stiffness and acoustic properties of an externallymountable spacecraft equipment module?keyword=Method for adjusting stiffness and acoustic properties of an externallymountable spacecraft equipment module?keyword=Method for adjusting stiffness and acoustic properties of an externallymountable spacecraft equipment module?keyword=Method for adjusting stiffness and acoustic properties of an externallymountable spacecraft equipment module?keyword=Method for adjusting stiffness and acoustic properties of an externallymountable spacecraft equipment module 专利,更快更准确