a weighted lever or arm in machinery, which when moved to a certain point falls and produces some motion.
| 单词 | θ214318 |
| 释义 | society > occupation and work > equipment > machine > parts of machines > lever > [noun] > weighted (2) tumbling bob1824 a weighted lever or arm in machinery, which when moved to a certain point falls and produces some motion. tumbling weight1903 = tumbling bob n. |
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