piston prover,活塞校准器
piston rotation perdurability,活塞下降速度
piston with weight carrier,带有底盘装置的活塞
pistonphone,活塞发声器
Pitot static tube,皮托静压管
Pitot tube,皮托管
pivot galvanometer,轴尖式检流计
pivot knife-plane,支点刀座
plain glass window,防护白玻璃观察窗
planar array,平面阵
planar (quad) location,平面定位
plane bearing,平面支承
plane grating,平面光栅
plane separation,平面分离
plane separation network,平面分离电路
plane table equipment,平板仪
plane table thermoconductivity meter,行星齿轮减速器
planimeter,求积仪
plankton bucket,浮游生物网底管
plankton counting chamber,浮游生物计数框
plankton haul [trawl],浮游生物拖网
plankton net,浮游生物网
plankton pump,浮游生物泵
plankton tow net,浮游生物拖网
plankton volume indicator,浮游生物体积测量器
plant environment,工厂环境
plant growth test chamber,植物生长试验箱
plasma chromatograph-mass spectrometer (PC-MS),等离子色谱-质谱联用仪
plasma chromatography,等离子蚀刻机
plastic sampler,塑料采水器
plastic window,塑料观察窗
plasticity,塑性
plate wave,板波
plate wave technique,板波法
plateau,平台；坪
Platinum-10% Rhodium/Platinum thermocoupe,铂铑10-铂热电偶
Platinum-13% Rhodium/Platinum thermocouple,铂铑13-铂热电偶
Platinum-30% Rhodium/Platinum-6% Rhodium thermocouple,铂铑30-铂铑6热电偶
platinum resistance thermometer sensor,铂热电阻
playback apparatus,回放仪
plotter,绘图机；绘图仪；地震剖面仪
plotting tablet,标图板
plug-in unit,插件
plug valve,旋塞阀
plumb,垂直器
plunger,动铁芯
plunger pump,柱塞泵
plunger tube,隔磁管
plunger viscometer,活塞式粘度计
pluviograph,雨量计
pluvioscope,降水测定器
pneumatic actuator,气动执行机构
pneumatic bubbling gauge,补气引压式验潮仪
pneumatic control,气动控制
pneumatic limit operator,气动极限操作器
pneumatic piston gauge,气动活塞式压力计
pneumatic pump,气动泵
pneumatic rotary actuator,角行程气动执行机构
pneumatic system,气动压力系统
pneumatic thickness meter,气动厚度计
point drift,点漂
point filament,点头灯丝
point location,点定位
point-to-point connection,点对点连接
point-to-point control,点对点控制；点位控制
point-to-point control system,点到点控制系统
point to point resolution,点分辨力
point-to-point transmission,点对点传输
pointer,指针；指示字
pointer adjustment,指针调整器
pointer galvanometer,指针式检流计
pointer instrument,指针式仪表
pointer length,指针长度
pointer travel,指针转角
points of mean axial fluid velocity,平均轴向流体速度点
poise nut,平衡铊
polar aurora,极光
polar coordinate type potentiometer,极坐标式电位差计
polar plot,极线图
polarimeter,偏振表；偏振计
polarimetry,旋光法
polariscope,偏振仪
polarity indicator,极性响应时间
polarization voltage,极化电压
polarized cartridge capacitance,极化极头电容
polarogram,极谱图
polarograph,极谱仪
polarograph quantitative detection limit,极谱仪定量检测限
polarographic cell,极谱池
polarographic maxima,极谱极大
polarography,极谱法
pole,极点
pole assignment,极点配置
pole piece,极靴
polling,探询；轮询
pollution,污染
polyamide,聚酰胺
polyethylene,聚乙烯
polypropylent,聚丙烯
polytetrafluror-ethylene (teflon),聚四氟乙烯（特氟隆）
polyvinyliden fluoride,聚氟乙烯
popular scanning electron microscope,普及型扫描电子显微镜
popular transmission electron microscope,普及型透射电子显微镜
population,总体
porcelain insulator,绝缘瓷瓶
porous polymer beads,高分子多孔小球
porous-layer open-tubular column;PIOT column,多孔层空心柱
port,通信口；端口
port guiding,阀口导向
portable hardness tester,携带式硬度计
portable multipurpose instrument set,轻便综合观测仪
portable X-ray detection apparatus,携带式X射线探伤机
portability,可移植性
portable (measuring) instrument,可[便]携式（测量）仪表
position,位置
position encoder,位置编码器
position error,位置误差；四角误差
position error coefficient,位置误差系数
position feedback,位置反馈
position indicating switch,阀位指示开关
position limit switch,行程开关
position transducer [sensor],位置传感器
positioner,定位器
positive displacement flowmeter,容积式流量计
positive feedback,正反馈
positive knives linear,正刀联线
positive-negative action,正负作用
positive negative three-step action,正负三位作用
positive pressure,正压
positive shock response spectrum,正冲击响应谱
positive strain,正应变
positive system,正系统