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← HistoryWhich outcome occurs when a medieval crossbow's tiller experiences prolonged bending during the "spanning" process?
A)Localized plastic deformation increases✓
B)Improved energy storage efficiency
C)Elastic limit threshold elevates greatly
D)Uniform crystalline lattice alignment forms.
💡 Explanation
Localized plastic deformation worsens when the crossbow's wooden tiller is overbent because exceeding the wood's elastic limit induces the mechanism of permanent set, resulting in irreversible shape change; therefore, accuracy decreases, rather than benefits such as higher energy storage occur.
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