短语词组短语Weldment Design 焊件设计;焊接设计weldment symbol 焊件的象征;焊接符号WELDMENT ENGINEER 焊接工程师Weldment drawing 焊接工程图mismatched weldment 非均质焊缝hk weldment hk40 焊缝group weldment 组焊件weldment bond 熔合区Engieering weldment 工程焊件 返回 weldment