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celt (slitely_mad); celtic stone (волчок, способный во время вращения в определённую сторону через некоторое время менять направление вращения на противоположное slitely_mad); rattleback (A semi-ellipsoidal top which will spin on its axis in a preferred direction. But, if spun in the opposite direction, it becomes unstable, "rattles", stops and reverses its spin to the preferred direction slitely_mad) | |||
Celt stone; wobblestone | |||
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Celt stone; wobblestone; Celt; rattleback |
кельтский камень: 2 phrases in 1 subject |
Mechanics | 2 |