| 摘要 |
A printed board, includes: a first shield portion, configured to reduce an influence of an electric field in combination with a casing accommodating the printed board, at least a part of the first shield portion being formed with a plurality of through holes; and a second shield portion, configured to reduce the influence of the electric field in combination with the casing, at least a part of the second shield portion being formed with a plurality of through holes, wherein the second shield portion is arranged alongside of the first shield portion.
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