Unverified85% confidenceTradeoffTime unknown
金属锁扣更牢固但增加重量且开合较慢，塑料插扣轻便快捷但强度低；小型犬追求轻便可用插扣，大型犬安全优先必用金属锁扣
1
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85%
Confidence
Long-term
Relevance
-
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Unverified锁扣式（登山扣/D扣）连接强度远高于塑料插扣，20kg以上犬种应选金属锁扣，塑料插扣长期使用易老化脆裂在暴冲时崩开88% similarUnverified金属锁扣（登山扣式/D扣）承重通常＞50kg且不易被撕咬破坏，塑料卡扣虽轻便但反复开合超过2000次后易疲劳断裂，大型犬和易激动犬应选金属锁扣87% similarUnverified快拆塑料扣件便捷但强度低于金属插扣，大型犬急拉时塑料扣可能崩开；30kg以上犬只建议选金属承力扣或套头式（无胸口扣）结构87% similarUnverified快拆扣件便捷性与牢固度存在权衡：塑料侧扣穿脱快但大力狗可能崩开，金属插扣/D扣更牢固但穿戴慢，大型犬优先牢固度86% similarUnverified锁扣优先选攀岩级金属D扣或旋转登山扣，塑料卡扣（侧压式）在大型犬拉力下易断裂脱扣，中大型犬务必避免纯塑料快扣86% similar
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