technique of joining hull sections afloat

航海及... ... technique of display 显示技术 technique of joining hull sections afloat 船体分段水上大合拢法 technique 技术 ...

船体大合拢,joinin... ... ) hull-erection hall 船体大合拢车间 ) technique of joining hull sections afloat 船体水上大合拢法 ...