two-ship element

例句：

1. 1.The two-ship element is crucial for maintaining stability in the ocean.
   双舰元素对于维持海洋稳定性至关重要。
2. 2. The double-ship element is a key component in the design of aircraft carriers.
   双舰元素是航空母舰设计的关键组成部分。
3. 3.The two-ship element plays a vital role in the navigation system of modern ships.
   双舰元素在现代船舶的导航系统中起着至关重要的作用。