| http://www.w3.org/ns/prov#value | - The shaft parts 702a and 702b provided at the rear ends of the parallel parts 703a and 703b are coated outside the inside insulating tubes 716a and 716b over the entire length with outside insulating tubes 718a and 718b formed of such insulating material as an ethylene tetrafluoride resin and are fixed with a bonding agent or the like.
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