The Union used hot air balloons and submarines.
联邦曾使用热气球和潜艇。
The principles are similar to sonar used by boats and submarines.
原理类似于船和潜艇的声纳系统。
The two sides have recently signed procurement deals covering helicopters and submarines.
双方最近双方签署的采购协议包括直升机和潜艇。
The challenges are huge, not least because planes and submarines are normally poles apart.
所面临的技术挑战非常大，不仅仅因为飞机和潜艇走了截然相反的两条路。
About 30 warships and submarines, 50 aircraft and 4,500 personnel are involved in the exercise, which runs through Monday.
大约30艘战舰和潜水艇、50架飞机以及4500名军人参加了这次持续到下星期一的演习。
We begin with a quick overview of nuclear energy, moving on to its application in powering the world's warships and submarines.
让我们来浏览一下核能，看一下它们怎样为世界军舰和潜艇提供动力。
Beijing and Moscow signed two arms-sale contracts in which China will buy Russian fighter jets and submarines, media reports said.
媒体报道称，中俄已签署两份军售合同，中方将从俄罗斯购买战斗机和潜艇。
As the commanding post of the blue team, we can use early warning helicopters to search and engage JH-7A aircraft and submarines in the combat.
作为蓝方指挥所，我们利用预警机搜索发现，然后指挥歼轰7飞机和潜艇实施打击。
Lily: That's appropriate. What you see here in the museum is absolutely amazing, with all affectionates of military vehicles, aeroplanes and submarines.
各种各样的战车，还有战斗机，跟潜艇。这些让人听起来真是过瘾。
VMS is the standard naval electronic chart display and information system (ECDIS-N), which is being deployed across the Navy's fleet of surface ships and submarines.
VMS系统是标准的海军电子海图显示和信息系统(ECDIS - N)，正部署在整个海军的水面舰艇和潜艇舰队。
These contracts are part of an overall U.S. Navy initiative to update and replace legacy computer and data networking systems aboard its surface ships and submarines.
这些合同正是美海军升级和替换船舰及潜艇上遗留计算机和数据网络系统全部合同的一部分。
The frigate can attack surface warships and submarines alone or together with other forces of the PLA Navy. It also has strong capabilities of guard, detection and combat.
滨州舰可单独或者协同海军其他兵力攻击敌水面舰艇、潜艇，具有较强的警戒探测和综合作战能力。
The energy released from nuclear fission is used to generate electricity, to propel ships and submarines, and is a source of the vast destructive power of nuclear weapons.
核裂变所释放的能量可用来发电，推动船只或潜水艇，也是核子武器巨大杀伤力的来源。
Nuclear energy has an excellent safety record, but there are now over 430 commercial nuclear-power plants in the world, in some 30 countries, and over 200 nuclear-powered ships and submarines.
原子能的安全记录还是令人满意的，然而现在已经有430多个商业核电站分布在世界各地的近30个国家中，此外还有200多艘核动力船只和潜水艇。
But to retain that advantage, America will need to harden its forward bases, invest in missile defence and submarines and counter China’s capacity in asymmetric electronic, cyber and space warfare.
不过为了保持优势，美国需强化其前沿基地，在导弹防御和潜艇方面投入资金，并对抗中国在非对称电子战、网络战以及太空战领域的能力。
Ask anyone who has ever served on one. They'll tell you there are only two types of ships in the world: submarines and targets.
去问任何曾经服过兵役的人吧。他们会告诉你世界上只有两种船：潜艇和目标。
He had a fascination for submarines and joined this branch of the service.
他迷恋潜艇并加入了海军的这个分支。
It's a source of emergency air on planes, submarines, and spacecraft that releases oxygen when heated.
这是在飞机、潜艇及宇宙飞船里，应急空气的来源，它在被加热时释放氧气。
Why did he start the war with no surface fleet, no troop transports and only 29 oceangoing submarines?
为什么他在没有水上舰队，没有运兵船，只有29艘远洋潜艇的情况下就开战？
Sophisticated ships, advanced sonar, robot submarines and genetic "bar-coding" techniques for fast species identification have all been brought into play.
用于物种快速鉴定的设备还包括装备精良的船舶、先进的雷达、无人潜水艇和遗传条形码技术。
The Astute submarines will patrol the world's oceans with minimum risk of being detected by surface ships and other submarines.
“机敏”级潜艇在全世界的海域中巡逻，而且被水面舰艇和其他潜艇探测到的几率非常小。
"Spending will increase because of decisions by both nations to upgrade and replace ageing nuclear production factories, missiles, submarines and bombers," he says.
他表示：“由于两国决定升级更新日益老化的核武生产工厂、导弹、潜艇与轰炸机，支出将会上升。”
Us submarines and mining had cut off 95% of Japan's imports of oil, food, and raw materials, immobilizing its air force and navy, and shutting down heavy industry.
美国潜艇和水雷切断了日本95%的石油，食品，和原材料进口，瘫痪了日本的空军和海军，重工业无米下锅。
Forget air traffic control as we know it now, and all the intelligent displays in submarines and fighter planes.
忘掉交通流量控制吧，以及潜水艇和战斗机上的智能显示器。
Forget air traffic control as we know it now, and all the intelligent displays in submarines and fighter planes.
忘掉交通流量控制吧，以及潜水艇和战斗机上的智能显示器。
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