pivot galvanometer,軸尖式檢流計

pivot knife-plane,支點刀座

plain glass window,防護白玻璃觀察窗

planar array,平面陣

planar (quad) location,平面定位

plane bearing,平面支承

plane grating,平面光柵

plane separation,平面分离

plane separation network,平面分离電路

plane table equipment,平板儀

plane table thermoconductivity meter,行星齒輪減速器

planimeter,求積儀

plankton bucket,浮游生物网底管

plankton counting chamber,浮游生物計數框

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,浮游生物体積測量器

plant environment,工厂環境

plant growth test chamber,植物生長試驗箱

plasma chromatograph-mass spectrometer (PC-MS),等离子色譜-質譜聯用儀

plasma chromatography,等离子蝕刻机

plastic sampler,塑料采水器

plastic window,塑料觀察窗

plasticity,塑性

plate wave,板波

plate wave technique,板波法

plateau,平台；坪

Platinum-10% Rhodium/Platinum thermocoupe,鉑銠10-鉑熱電偶

Platinum-13% Rhodium/Platinum thermocouple,鉑銠13-鉑熱電偶

Platinum-30% Rhodium/Platinum-6% Rhodium thermocouple,鉑銠30-鉑銠6熱電偶

platinum resistance thermometer sensor,鉑熱電阻

playback apparatus,回放儀

plotter,繪圖机；繪圖儀；地震剖面儀

plotting tablet,標圖板

plug-in unit,插件

plug valve,旋塞閥

plumb,垂直器

plunger,動鐵芯

plunger pump,柱塞泵

plunger tube,隔磁管

plunger viscometer,活塞式粘度計

pluviograph,雨量計

pluvioscope,降水測定器

pneumatic actuator,气動執行机构

pneumatic bubbling gauge,補气引壓式驗潮儀

pneumatic control,气動控制

pneumatic limit operator,气動极限操作器

pneumatic piston gauge,气動活塞式壓力計

pneumatic pump,气動泵

pneumatic rotary actuator,角行程气動執行机构

pneumatic system,气動壓力系統

pneumatic thickness meter,气動厚度計

point drift,點漂

point filament,點頭燈絲

point location,點定位

point-to-point connection,點對點連接

point-to-point control,點對點控制；點位控制

point-to-point control system,點到點控制系統

point to point resolution,點分辨力

point-to-point transmission,點對點傳輸

pointer,指針；指示字

pointer adjustment,指針調整器

pointer galvanometer,指針式檢流計

pointer instrument,指針式儀表

pointer length,指針長度

pointer travel,指針轉角

points of mean axial fluid velocity,平均軸向流体速度點

poise nut,平衡鉈

polar aurora,极光

polar coordinate type potentiometer,极坐標式電位差計

polar plot,极線圖

polarimeter,偏振表；偏振計

polarimetry,旋光法

polariscope,偏振儀

polarity indicator,极性響應時間

polarization voltage,极化電壓

polarized cartridge capacitance,极化极頭電容

polarogram,极譜圖

polarograph,极譜儀

polarograph quantitative detection limit,极譜儀定量檢測限

polarographic cell,极譜池

polarographic maxima,极譜极大

polarography,极譜法

pole,极點

pole assignment,极點配置

pole piece,极靴

polling,探詢；輪詢

pollution,污染

polyamide,聚　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,普及型掃描電子顯微鏡

popular transmission electron microscope,普及型透射電子顯微鏡

population,總体