observation window
短语词组
- observation E window 观察窗
- observation time window 观测时窗
- Lockout Observation Window 锁定观察窗口
- Arc observation window 弧光观测窗
- Infrared observation window 红外观察窗口
- wide observation window 宽观察窗
- quartz observation window 石英玻璃窗
- Door observation window 门观察窗
- airtight observation window 密闭观察窗 返回 observation window