下行焊
詞語: 下行焊
解釋: downward welding in the inclined positioin
詞典: 航海專業漢英詞典
下行焊 相關解釋
downward welding in the inclined positioin 〔名詞〕下行焊
下行焊 downward welding in the inclined positioin;verical down welding
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