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structure composed of one meter of time intervals, and two surfaces of which one fixed and one set in motion by the tool in such a way that,the surface on the surface of the mobile to fixed spending hours in all time zones on land at the same time.
structure composed of one meter of time intervals, and two surfaces of which one fixed and one set in motion by the tool in such a way that,the surface on the surface of the mobile to fixed spending hours in all time zones on land at the same time.
