短語(yǔ)詞組短語(yǔ)Aerospace structural material 航天結(jié)構(gòu)材料AMS Aerospace Material Specification 空間材料規(guī)范Aerospace Material Specifications 美國(guó)航空航天材料規(guī)范;宇航材料規(guī)范Aerospace Material Specification 航空材料規(guī)格;航天材料技術(shù)規(guī)格ams aerospace material specifications 宇航材料規(guī)范aerospace material document 航天材料文獻(xiàn) 返回 aerospace material