upper clamping上部: headpiece; ridge夹: double-layered; lined件: piece; article; item上夹件: upper yoke clamping上部: headpiece; ridge◇上部建筑 top-out; 上部截槽 overcut; 上部结构 [土] superstructure; 上部矿层 overlying seam下载手机词典可随时随地查词查翻译