| 单词 | permissive action link |
| 释义 | > as lemmaspermissive action link permissive action link n. a mechanism in or attached to an (esp. nuclear) weapon, which prevents unauthorized arming or launching. ΚΠ 1964 Times 17 Sept. 12/5 In addition, since 1961 we have placed permissive action links on several of our weapons. 1990 Sci. Amer. Dec. 22/3 Heading the list is the comprehensive use of so-called permissive action links (PALs). These electromechanical locks prevent warheads from detonating unless an essentially unbreakable code is inserted. 2002 N.Y. Mag. 26 May 28/1 Less sophisticated..weapons..have no permissive action links at all, so that setting one off would be about as complicated as hot-wiring a car. < as lemmas |
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