Unverified85% confidenceDecision RuleTime unknown
承重优先选方管钢材（40x40mm或以上壁厚≥1.2mm）而非圆管，方管抗扭曲性能更强；单层板承重需求＞30kg（放书/杂物）选钢制层板，＜15kg（放绿植/摆件）可选钢木或钢玻组合降低成本
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