残余孔隙水压力 residual pore water pressure

残余孔隙度 residual porosity

残余孔隙 residual porosity

剩余孔隙压力 residual pore pressure

残余孔洞 residual air hole

余隙孔 access hole

余孔捷 Kong-Jie Yu

膨胀余位测孔 ullage port ; ullage hole

铰孔余量 reaming allowance