人类利用有毒的化学物质由来已久。远古时期，人们为了生存，曾使用烟火将野兽从深穴岩洞中熏出，以猎取为食。在战争中用来杀伤人员、牲畜、毁坏植物等的各种有毒的化学物质都称为化学毒剂。
化学毒剂必须通过投放来实现威胁，而且这种威胁可以防范。
The chemical agent must be delivered in order to threaten someone, and the threat can be countered.
致死性化学毒剂对策，综述了防御化学袭击的措施。
Lethal chemical Agent Countermeasures reviews some of the measures taken to defend against chemical attack.
介绍了化学毒剂激光遥测报警系统的基本原理与技术方法。
The fundamental principle and technical method of LIDAR system for remotely detecting chemical warfare agents are related.
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