adj.展望的；周视的
periscopic charge coupled device 蠕动式电荷耦合器件
stability in periscopic aimingline 潜望镜瞄准线稳定
Sight Periscopic Infrared Equipment 红外潜望瞄准装置
Periscopic study of competitive sports in northwest regions of China 西北地区竞技体育前瞻性研究
Technology analysis of adding CCD camera to gunner's periscopic sight 稳瞄炮长镜加装CCD摄像机技术分析
