Unverified85% confidenceTradeoffTime unknown

碳纤维摇臂比铝合金轻30-40%且抗形变更好，适合3m以上长臂和频繁搬运；铝合金刚性足、成本低，适合固定机位和2m内短臂

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Unverified碳纤维杆比同长度铝合金轻30-40%，3米以上作业时手臂疲劳明显更小，但抗侧向撞击差、磕碰易分层开裂84% similar Unverified碳纤维腋拐比铝合金轻约30%-40%（单支可低至400g），但价格高且抗侧向冲击性较差；铝合金综合性价比更高更耐磕碰83% similar Unverified承重与便携互相矛盾：铝合金三脚架承重强但重（同规格比碳纤维重40%左右），碳纤维轻且减震好但同承重下价格约为铝合金的2-3倍，桌面短脚架因力臂短通常铝合金已足够83% similar

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