... case hardening 表面硬化 ; 表层硬化 ; 表面渗碳硬化 ; 渗碳 book case 书架 ; 书壳 ; 书柜 ; 书橱 case leather 箱皮 ; 皮革类英语 ; 箱包革 ; 箱革 ...
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无里粗纸板是造书壳的常用材料。
Grey board or unlined chipboard are the normal boards used for case-making.
纺织物料：作书壳包面用的真棉布，麻布及丝绸织品。
Woven material: Genuine cloth of cotton, linen and silk, used for case covering.
广泛适用于包装印刷、纸盒、纸箱、书壳等行业过胶的专用设备。
It is widely applicable to the special equipment in the fields such as packing and printing, paper boxes, paper cartons and book covers.
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