tracer ammunition中文什么意思

曳光弹弹药

曳光弹药

• tracer:    n. 追踪者；追踪物，示迹剂；描摹者 ...
• ammunition:    n. 1.弹药。 2.〔废语〕军需品 ...
• tracer laboratory (= tracer lab):    放射化学实验室；示踪物实验室

百科释义

Tracer ammunition (tracers) are bullets or cannon caliber projectiles that are built with a small pyrotechnic charge in their base. Ignited by the burning powder, the pyrotechnic composition burns very brightly, making the projectile visible to the naked eye.