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少年宫
释义
少年宫
Encyclopedia
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释
youth palace
少年宫
组织青少年参加各种校外活动的非营利机构及设施。
教育学
德育途径
释
children's palace
少年宫
综合性的中国少年儿童校外教育机构。
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weld defects of oil and gas pipeline manufacturing
welded hollow spherical joint
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welded tube and pipe process
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welder’s pneumoconiosis
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welding fixture of launch vehicle
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