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Switch button when we use every day, such problems sometimes encountered: what wePosition of the switch does not know which light? This is because our brains in spatial thinking, two Perpendicular to the surface caused by the relationship is difficult to establish ways of thinking.Therefore,when switch is designed as a30° angle, it is clear to show in the space of twoA mutual relationship, this is a boot process of spatial thinking.
Guangdong university of petrochemical technology