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向下立焊焊缝
meaning in Chinese
downward vertical weld
vertical down weld
Related Words
脚后跟向下
后心向下
向下凸出
向下式
向下弹射
掌心向下
向下负载
向下传
姿势向下
向下漂移
向下累积
向下立焊
向下立焊条
向下力
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