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blade guard /ˈblak ˈdwɔːf/ n

中文：锯片护罩

中文 · 锯片护罩Español · guarda del discoFrançais · protège-lame
Meaning：Device covering the blade in order to protect the user’s hands and prevent sawdust from escaping.
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Found in these illustrated scenes（2）

Power miter saw Table saw

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