The first Jin-class boat was spotted in July 2007 on a satellite photo from late-2006.
他们最早现身的踪迹是 2007 年 7 月的一张卫星照片上。
The Virginia-class Block III submarines are being built by Northrop Grumman Shipbuilding and General Dynamics Electric Boat.
弗吉尼亚级Block III潜艇正由诺斯罗普·格鲁曼船舶公司和通用动力电船公司建造。
Decks under machinery, bollards, boat davit and other heavy concentrated loads to be reinforced by carling or welded doubler where necessary as approved by Class.
机械装臵、带缆桩、艇吊和其它重型负载集中区域下方的甲板应采用短纵桁或复板进行加强,具体应经过船级社认可。
应用推荐