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Research on the Key Technologies of Rotary Vane Steering Gear
xie liang-xi1; kong jian-yi1; xiong he-gen1; yang jin-tang1; wan xiao-hong2(1.college of machinery automation; wuhan university of science and technology; wuhan 430081; china; 2.technique center; wuhan marine machinery plant co.ltd; wuhan 430081; china)
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Whole Salvage of Sunken Ancient Vessel Nanhai No.1
wu jian-cheng1; sun shu-min2; zhang yong-qiang1 (1.guangzhou salvage bureau; guangzhou 510260; china; 2.school of civil engineering and traffic; south china university of technology; guangzhou 510640; china)
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