| http://www.w3.org/ns/prov#value | - Thus, it is preferable that each sheet has the thickness of 5 ??m-100 ??m, the gap between the sheets is equal to 20 ??m-300 ??m, the whole thickness is equal to 30 ??m to 500 ??m, one of the two sheets has the surface resistivity of 1010 ohm/square-1016 ohm/square on its outer surface, and the other sheet has the surface resistivity of 107 ohm/square or less on its outer surface. [0471] The image
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