overlapping part搭接: lap; lap joint; lapped butt; ...部分: part; section; portion焊接部分: welding portion间接部分: indirect department连接部分: joining part; pontes下载手机词典可随时随地查词查翻译关注微信公众号:chachacidian,回复:搭接部分,即可在微信中查询翻译