在碗底放一枚硬币s,�碗里倒水后,会观察到“硬币”上升,如图所示.请将眼睛看到硬币像s′的光路图补充完整。——青夏教育精英家教�—— Template




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tomski在碗底放一枚硬币s,�碗里倒水后,会观察到“硬币”上升,如图所示.请将眼睛看到硬币像s′的光路图补充完整。——青夏教育精英家教�—— coloring