stud finder
- 木框架探测器：一种手持设备，用于确定轻型框架建筑中墙面表面安装后使用的框架木头的位置。
stud finder
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n.
a small permanent magnet in a metal container; when the magnet clicks against the container it indicates that the magnet is directly over an iron nail that holds the wallboard to a stud
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WordNet