短語詞組短語observation E window 觀察窗observation time window 觀測時窗Lockout Observation Window 鎖定觀察窗口Arc observation window 弧光觀測窗Infrared observation window 紅外觀察窗口wide observation window 寬觀察窗quartz observation window 石英玻璃窗Door observation window 門觀察窗airtight observation window 密閉觀察窗 返回 observation window