un. 多层焊；多层的 [网络] 多层焊接；分段多层焊；多道焊接 run of multi-layer welding: 多层焊道数multi-layer and multi-pass welding: 分层多道焊welding layer: 焊层; 焊接层multi operator welding set: 多站电焊机multi pass welding: 多层焊; 多道焊下载手机词典可随时随地查词查翻译
