钻孔扩孔  bore hole drilling and enlarging

(DHS)空心扩孔器  DHS)Hollow reamer

250B轴承环扩孔机  250B bearing ring rolling machine

Vesic小孔扩张理论  Vesic theory

爆炸扩孔  pot

鼻孔扩张器  rhineurynter

冲孔与扩孔  punching and hole-expanding

大直径挖孔扩底灌注桩  large-diameter cast-in-situ piles with enlarged ba

带扩孔端的抗拔桩  uplift pile with hole expansion end

带内锥面的金刚石扩孔器  taper wall core shell

定向钻扩孔  reaming operation in directional drilling

多节扩孔桩  multi-under-reamed bored piles

多孔扩散  Porous diffusion

多孔扩散板  porous diffuser plate

多孔扩散型消声器  Porous diffusion type silencer

多普勒频率扩展  Doppler spread

反射率扩散反射系数  albedo

概率扩散  probabilistic diffusion

钢炮扩孔  cannon expanding