Even though this hypothetical should be of great concern, it is far from the nightmare nuclear domino effect, which by definition requires many more countries to speedily develop nuclear weapons.

即使这一假定应该值得关注，但离核武器多米诺效应的恶梦还很遥远，因为根据多米诺定义，必须有多国都迅速开发核武器。

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This article summarize definition, categorization and Identification of Special Nuclear Material.

本文概述了特殊核材料的定义、分类、辐射特性及其鉴别方法。

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For one thing, pariah states will, I suspect, regard the deterioration of America's nuclear arsenal as an inducement to acquire nuclear capabilities that will, by definition be more formidable than would otherwise be the case.

CENTERFORSECURITYPOLICY: Center For Security Policy

This treaty is so ineffective it doesn't even have a practical definition of what constitutes a nuclear test.

CENTERFORSECURITYPOLICY: Center For Security Policy

For most investors the Japan story is the definition of ugly: a devastating tsunami followed by a nuclear reactor meltdown.

FORBES: Japan's Economy May Stink, But Its World-Class Firms Are A Bargain