helmetn.头盔;安全帽
Helmet-Mounted Display Device头盔显示器装置
Helmet Initiated Pointing System头盔瞄准系统
helmet-mounted oxygen regulator头盔氧气调节器
Helmet-Mounted Equipment Platform头盔装置平台
helmet-mounted night vision goggles头盔微光夜视
Helmet Integrated Display Sighting System钢盔式综合显示视觉系统
Helmet-Mounted Optical Projectile System头盔光学投射系统