Unverified85% confidenceDecision RuleTime unknown
支撑杆材质决定强度与重量:碳素杆最轻但脆易断裂不适合常用;铝合金杆(7075航空铝)强度重量平衡最佳;铁杆/钢管最结实抗风但重,适合固定营地不常搬运
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