铰孔余量 reaming allowance

余隙孔 access hole

膨胀余位测孔 ullage port ; ullage hole

残余孔隙水压力 residual pore water pressure

残余孔隙度 residual porosity

膨胀余位测孔盖板 ullage plate

膨胀余位测孔栓塞 ullage plug

残余孔隙 residual porosity

剩余孔隙压力 residual pore pressure

冗余通孔 Double vias