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赛艇、皮艇、划艇及其附件技术条件
Specification of rowing,kayak,canoe and theirs accessories
价格：￥0.00
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玻璃纤维增强塑料养殖船
Cultivating boat of glass fiber reinforced plastics
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潜水器和水下装置耐压结构材料技术条件
Technical specifications of material of pressure hull structure for submersibles and underwater equipments
价格：￥0.00
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潜水器和水下装置耐压结构制造技术条件
价格：￥0.00
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