Historic test velocity data used for chronograph/light screen system uncertainty analysis.

Projectile velocity data, from tests using the National Institute of Justice (NIJ) body armor standard (NIJ-0101.06) test threats, collected over a numbers of years...弹丸速度数据，源自采用美国国家司法研究所（National Institute of Justice, NIJ）防弹衣标准（NIJ-0101.06）所定义的测试威胁开展的相关试验，历经多年收集所得。