24 May 2023
45m
“有人想卡我们的脖子是卡不住的”！他从零开始突破国外技术封锁，铸造国之重器“海牛Ⅱ号”刷新世界纪录，致敬时代楷模万步炎 | CCTV「时代楷模发布厅」20230522
CCTV中国中央电视台
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