[网络] 带钝边X形坡口 double v groove with root face: 带纯边的x形坡口; 带钝边single v groove with root face: 带纯边v形坡口; 形坡口single-v groove with root face: 单钝边v形坡口asymmetric double v groove: 不对称; 形坡口double v groove: x 形坡口; x形坡口; 双v形坡口; 双面; 形坡口下载手机词典可随时随地查词查翻译