Unverified80% confidenceTradeoffTime unknown
承重能力主要取决于材质和结构：ABS塑料挂钩长期承重＜2kg易断裂，需要挂重物应选锌合金或304不锈钢承重臂
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80%
Confidence
Long-term
Relevance
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Unverified牵引绳锁扣优先选用铝合金或锌合金材质，避免塑料快挂扣；铝合金O型/D型扣拉力强度可达200kg以上，塑料扣长期使用会老化脆裂83% similarUnverified铝合金材质在耐用度、散热和承重上全面优于ABS塑料款，长期使用（尤其重本）应选合金；塑料款关节铰链是易损点，反复折叠后易松动打滑83% similarUnverified折叠便携支架优先选铝合金材质：ABS塑料铰链在反复折叠约500-1000次后易松动导致支撑角度打滑，铝合金转轴阻尼寿命更长82% similarUnverified握把为铝合金材质配滚珠轴承，做工质感较好，但相比塑料握把重量更大，长时间跳绳手腕负担略重81% similarUnverified整体锌合金压铸机身重量≥250g的压蒜器，杠杆省力效果显著优于ABS塑料款，手小或握力弱的人应优先选锌合金一体压铸结构81% similar
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