[KongchangAI]
Unverified80% confidenceTradeoffTime unknown

高度可调分档式和无级式:档式(金属立柱卡扣)间距通常2.5-5cm一档,无法微调;伸缩立柱式可无级调节但接缝处承重下降,放重物选档式更稳

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