重点词汇
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金工
metalworking; metallurgy; goldsmith; metal craftsman; metal fabrication; metalwork
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机械
machinery; machine; mechanism; mechanical appliance; clockwork; mechanical; mechanistic; automatic; inflexibly
metalworking machinery
金工
metalworking; metallurgy; goldsmith; metal craftsman; metal fabrication; metalwork
机械
machinery; machine; mechanism; mechanical appliance; clockwork; mechanical; mechanistic; automatic; inflexibly