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← HistoryIn early Chinese crossbows utilizing bronze triggers, which consequence results when residual stresses exceed the metal's yield strength during trigger arming?
A)Progressive trigger creep is accelerated✓
B)Increased bowstring velocity occurs
C)Bolts exhibit spiral trajectory bias
D)Elastic deformation fully recovers later
💡 Explanation
The trigger yields and deforms permanently given a high residual stress, causing irreversible deflection via plastic deformation rather than elastic; this deflection causes progressive trigger creep because the trigger no longer firmly holds, therefore the trigger arm moves prematurely, rather than remaining locked.
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