welded tube fitting的意思|示意
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焊接管件
welded tube fitting的网络常见释义
焊接管件 化工引擎_词典查询_焊接 ... 钢质焊接气瓶、welded steel gas cylinder 焊接管件、welded (or solded ) tube fitting 高频焊接聚氨酯泡沫塑料、high-frequency weldable polyurethane foam ...