It is part of a new generation of sophisticated weaponry under the US Strategic Defense Initiative (SDI).

它是“美国战略防御主动权(SDI)”项下新一代复杂武器的组成部分。

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And I urge you again to pass the Strategic Defense Initiative, SDI.

CENTERFORSECURITYPOLICY: Center For Security Policy

It proposes to restructure fundamentally the Strategic Defense Initiative (SDI) with a view to preventing the executive branch from acquiring an option to deploy a layered, effective defensive system in the near-term.

CENTERFORSECURITYPOLICY: Center for Security Policy | Showdown On SDI: Senate To Debate The Ultimate ��Killer Amendment��

The Airborne Laser program is a direct descendent of Ronald Reagan's visionary Strategic Defense Initiative (SDI), with its exploration of various means of intercepting and destroying ballistic missiles - including lasers and other "directed energy" techniques.

CENTERFORSECURITYPOLICY: Why not the best?