Unverified88% confidenceDecision RuleTime unknown
挂杆跨度超过90cm且无中间支撑时，圆管挂杆易弯曲，应选椭圆形铝合金挂杆（截面约30x15mm）或增加中间吊码，跨度＞120cm必须分段
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88%
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Long-term
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