| 摘要 |
A target device includes a rear sheet member and a front sheet member each having one or more conductor members aligned with each other, and an intermediate member disposed between the sheet members for separating the conductor members from each other. The intermediate member is compressible or deformable, or includes one or more openings having an area large enough for allowing the conductor members to be contacted with each other when the sheet members are deformed and hit by balls. The target device may be supported in any place or position with a frame.
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