| 释义 |
per·i·scope AHD[pĕrʹĭ-skōp'] D.J.[ˈperɪˌskəʊp]K.K.[ˈpɛrɪˌskop]n.（名词）  periscopeLight enters the top lens of a periscope, reflects off a mirror set at a 45 degree angle, travels down the periscope tube, and reflects off a second mirror, also set at a 45 degree angle. Light that reflects off the second mirror exits through the bottom lens and into the eye of the user.- Any of various tubular optical instruments that contain reflecting elements, such as mirrors and prisms, to permit observation from a position displaced from a direct line of sight.潜望镜：一种管状镜，包含折射物，如镜子和棱镜，用以观察与视线不在同一直线上的位置
per'iscopʹic AHD[-skŏpʹĭk] 或 per'i·scopʹi·cal [-ĭ-kəl] （形容词） |