First through a low velocity core, and then through a high velocity shell, where their speed is increased before they are transmitted into the surrounding seawater.
During welding metallurgic process, re compound with surface energy separated out previously from superheating melted metal, and acted as the crystallizing nucleus of compound carbides.
Outlook Weekly, part of the state news agency, quoted a military academic warning that to misuse the term "core interests" might undermine its deterrent value or even lead to armed conflict.