美国海军正在研制一系列新型战术核武器(注:按目前流行的战场核武器和非战略核武器术语,这些武器通常称为战术核武器)。然而,在过去的二十多年里,美国海军在舰队战术核武器方面一直在退步;它大幅度削减了核武器以及核装备战舰的数量,而且武器库内的武器也 The U.S. Navy is developing a series of new types of tactical nuclear weapons. (Note: According to the popular battlefield nuclear weapons and non-strategic nuclear weapons, these weapons are often referred to as tactical nuclear weapons.) However, for more than two decades the United States Navy has regressed its fleet tactical nuclear weapons; it has drastically reduced the number of nuclear weapons and nuclear-equipped warships, and weapons in the arsenal have also