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Is the double bottom block built on pin jigs?
双层底分段是在胎架上造的吗?
youdao
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Longitudinally-framed double bottom structure.
纵骨架式双底结构。
youdao
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Double bottom circle book "Qing Emperor Kangxi years."
底双圈内书“大清康熙年制”。
youdao
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Double bottom circle book "Qing Emperor Kangxi years."
底双圈内书“大清康熙年制”。
youdao