标准查询 标准查询木材和木制产品耐久性.使用级别:定义,实木和基于木材产品的应用
Durability of wood and wood-based products. Use classes: definitions, application to solid wood and wood-based products
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标准查询Durability of wood and wood-based products. Use classes: definitions, application to solid wood and wood-based products
