单词:dynamic corrosion
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The AG600 amphibious aircraft is expected to take its maiden flight over land in the first half of 2017 and on water in the second half, said its developer, the Aviation Industry Corporation of China (AVIC). 国有飞机制造商中国航空工业集团
发表于:2019-02-06 / 阅读(52) / 评论(0)
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