?穿透试验    penetrant testing (PT)

?贯穿件    penetrating piece

?贯穿,渗透    penetration

?针穿度计    penetrometer

?旒旗灯    pennant (or pendant) lamp

?剪断破面率    percent shear

?冲击试验    percussion (or impact) test

?冲击焊接    percussion welding

坠落试验    percussive (or drop) test

?坠落试验    percussive (or drop) test

?理想流体    perfect fluid

?理想气体    perfect gas

?完全驱气    perfect scavening

?多孔板    perforated plate

?多孔环    perforated ring

?有孔垫圈    perforated washer

?性能曲线    performance curve

?性能试验    performance test

?性能值    performance valve

?羊皮纸    pergament (or parchment) paper

?周期,期间    period

?周期性波    periodic wave

?定期检验    periodical survey

?外围设备,辅助设备    peripheral equipment

?圆周速度    peripheral velocity

?潜望镜    periscope

?固定压载    permanent ballast

?永久压载    permanent ballast

?永久煤舱    permanent coal bunker

?固定护舷材    permanent fender

?永久磁铁    permanent magnet

?彻底检修    permanent repair

?永久变形    permanent set

?常备品    permanent stores

?永久应变    permanent strain

?浸透性,导磁性,浸水率    permeability

?容许误差    permissible error

?许可长度    permissible length

?容许温度    permissible temperature

?垂标    perpendicular

?个人计算机    personal computer (PC)

?人员转移舱    personnel transportation capsule (PTC)