平端面钻中心孔机床 spotfacing and centering machine

平端面电极 flat electrode

平端、端面 Butt end

端面平面度 Turning End Surface Pianeness

平端面金刚石钻头 flat-faced bit ; flat nose bit

端平面 [机] Transverse plane

轮辐端面不平 Spokes face inequality ; round face extraordinary policy

平衡型密封端面设计 Hydraulically Balanced Seal Face Design

两端面平行度 Two face parallel

端面平行差 sides out of parallel