| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a magnetic shield room which reduces magnetic flux entry of a low-frequency AC component of a leakage magnetic field from a through-hole. Ž<P>SOLUTION: The through-hole structure of the magnetic shield room which includes a wall formed of a material containing a high-magnetic-permeability material and a cylinder body formed of a material containing a high-magnetic-permeability material in a portion of the wall, and blocks entering magnetic noise, is equipped with a high-conductivity material fitted covering and enclosing the cylinder body. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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