infra-red acquisition
(1)红外探测
(2)红外捕获

• underlagged
• underload
• undermined-phase technique
• undermodulation
• underquenching
• undersaturation
• undersea ranging
• undershoot
• underspeed
• underswing
• underwater camera
• underwater laser radar
• underwater TV camera
• underwater visibility
• underwater vision
• undeveloped
• undeviated light
• undiffracted wave
• undissolved substance
• undistorted
• undistorted image
• undistorted wave
• undisturbed
• undoped
• undoped diode