密切[平]面  osculating plane

平稳密切面  stationary osculating plane

半自动清密平面磨床  semi-auto precision plain grinder

海平面密度  sea level density

精密平面磨床  precision horizontal surface grinder; precision surface grinding machine; precision horizontal surface grinding machine

精密平面抛光机  precision plane polishing machine

精密平面栅穿通型  precise plane gate PT

密切面  osculation plane; AI and ND recombined vaccine

密切面角  angle of osculation

平面密度  horizontal density

平面密封  gasket; flat seal

平面密封接头三通  Tee-face seal

平面密排钢珠系统  a plane system of closely arranged steel balls

双重密切面  double osculating plane

自动精密平面磨床  automatic precision plain grinder

从切平面  rectifying plane

等平面切割  isoplanar cutting

反平面切口  anti plane notch

反平面切口问题  eigenvalue