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tension block /ˈtɛmpɹəɹi ɛksɪbˈɪʃən ˈɹuːmz/ n

中文：张力调节块

中文 · 张力调节块Español · columna de tensiónFrançais · bloc-tension
Meaning：Parts that control the tension of the upper thread. tension block
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Found in these illustrated scenes（3）

Knitting machine tension device Sewing machine Sewing machine

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