标准查询 标准查询木材和木制品的耐久性.使用等级:实心木材及木质产品的定义和应用
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
