希腊字母Φ,通常转写为ph。
希腊字母Φ,通常转写为ph。
Φ, the 21st letter of the Euclidean and modern Greek alphabet, usually romanized as "ph".
黄金比例。
The golden ratio.
序列灯光产生的虚假运动错觉。
A visual illusion whereby a sequential pattern of lights produces a false sense of motion.
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