| http://www.w3.org/ns/prov#value | - sical parameter detected by said detector is transmitted from said signal-transmitting coil to said signal-receiving coil through mutual induction; and a group of power supply coils including a power-supplying coil and a power-receiving coil that are disposed in such a manner as to be rotatable relative to each other, said group of power supply coils being arranged such that an electromotive force
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