圆孔口
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带裂纹的椭圆孔口
elliptic hole with a straight crack
圆孔口
Elliptic cavity
Elliptical cavity
孔口流量计
orifice flow meter
orifice flowmeter
orifice meter
orificemeter
孔口流
orifice flow
孔口控制杆
port lever
孔口计系数
orifice meter coefficient
孔口计分接头
orifice tap
孔口计
orifice [flow] meter
orifice meter
孔口几何
orifice geometry
孔口机理
pore mouth mechanism
孔口改性
Pore-opening modification
Controlled pore-opening size
孔口封闭器
packing gland
孔口封闭灌浆法
bore hole-top-enclosed grouting method
孔口端盖
port end cover
孔口出水
aperture diameter and outlet discharge
aperture outflow
孔口出流
orifice flow
outflow from orifice
孔口标高
elevation of borehole
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