一种观察装置,可使观察者从不同高度观察物体,且通常不易被发现。
periscopes — plural of periscope
潜望镜(镜头)；[化] 潜望镜
一种观察装置,可使观察者从不同高度观察物体,且通常不易被发现。
A form of viewing device that allows the viewer to see things at a different height level and usually with minimal visibility.
提供被遮挡视野的光学仪器
an optical instrument that provides a view of an otherwise obstructed field
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