工程图学专业词汇英语翻译
对口熔接接头 butt-welding fitting翼形螺帽(元宝螺帽) butterfly nut蝶阀 butterfly valve船股线，船尾线 buttock lines扁圆头 button head压痕接缝 button punched standing seam扁圆头螺栓 buttonhead bolt锯齿形螺纹 buttress thread伯明翰线规 BWG(Bwg，Birmingham Wire Gage)青铜 BZ(bronze) 语际翻译 版权所有
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