﹛﹛porous polymer beads,高分子多孔小球
porous-layer open-tubular column;PIOT column,多孔層空心柱
port,通信口；端口
port guiding,閥口導向
portable hardness tester,攜帶式硬度計
portable multipurpose instrument set,輕便綜合觀測儀
portable X-ray detection apparatus,攜帶式X射線探傷机
portability,可移植性
portable (measuring) instrument,可[便]攜式（測量）儀表
position,位置
position encoder,位置編碼器
position error,位置誤差；四角誤差
position error coefficient,位置誤差系數
position feedback,位置反饋
position indicating switch,閥位指示開關
position limit switch,行程開關
position transducer [sensor],位置傳感器
positioner,定位器
positive displacement flowmeter,容積式流量計
positive feedback,正反饋
positive knives linear,正刀聯線
positive-negative action,正負作用
positive negative three-step action,正負三位作用
positive pressure,正壓
positive shock response spectrum,正衝擊響應譜
positive strain,正應變
positive system,正系統
positive temperature coefficient thermistor,正溫度系數熱敏電阻
post emulsifiable dye penetrant testing method,后乳化性著色滲透探傷法
post emulsifiable fluorescent penetrant testing method,后乳化性熒光滲透探傷法
post emulsifiable penetrant,后乳化性滲透液
potential evaporation,蒸發率
potentiometer,電位器
potentiometer compass,電位器羅盤
potentiometer pressure transducer,電位器式壓力傳感器
potentiometer type pressure transducer,電位器式壓力傳感器
potentiometric analyzer,電位式分析器
potentiometric displacement transducer,電位滴定（法）
potentiometric transducer [sensor],電位器式傳感器
potentiometry,電位法
powder-filled enclosure (Ex q），充砂外殼(Ex q）
powder sample,粉末樣品
power amplifier,功率放大器
power compensation differential scanning calormeter,功率補償差示掃描量熱儀
power-compensation differential scanning calorimetry,功率補償型差示掃描量熱法
power factor meter,功率因數表
power source,主電源
power spectral density,功率譜密度
power supply device,電源裝置
power supply frequency,電源頻率
power supply voltage,電源電壓
power system automation,電力系統自動化
power-fail circuit,電源故障電路
practical response time,實用響應時間
practical salinity scale 1978,1978實用鹽標
pre-conditioning time,預處理時間
pre-vacuum chamber,預抽室
pre-weighing,預稱裝置
preamplifier,前置放大器
precipitation gauge,雨量量筒
precipitation intensity,降水強度
precise stereoplotter,精密立体測圖儀
precision,精密度
precision disc grinder,樣品磨薄机
precision micrometer [microdisplacement] inspection instrument,精密測微檢定儀
precision of measurement,測量精密度
precision (pressure) gauge,精密壓力表
predictive control,預測控制
preliminary adjustment,初調；預調整
premix burner,預混燃燒器
preparative chromatography,制備色譜法
preparative gas chromatograph,制備气相色譜儀
preparative liquid chromatograph,制備液相色譜儀
prepayment meter,預付費電度表
press,壓塊机
pressure,壓力；壓強
pressure adjusting screw,壓力調節螺杆
pressure altitude formula,气壓測高公式
pressure bell,引壓鐘
pressure compensator,壓力補償器
pressure constant state,恒壓狀態
pressure/depth conversion factor,壓力-深度轉換系數
pressure facility,壓力設備
pressure frequency response of microphone,傳聲器聲壓頻率響應
pressure gauge,壓力表
pressure gauge tester,壓力表校驗器
(pressure)gauge with back connection,軸向壓力表
(pressure)gauge with bottom connection,徑向壓力表
(pressure)gauge with electric contact,電接點壓力表
(pressure)gauge with transmission device,電遠傳壓力表
pressure gradient correction factor,壓力梯度校正因子
pressure gradient microphone,壓差傳聲器
pressure in the ocean,海洋中的壓力
pressure instrument,壓力儀表
pressure isolating chamber,壓力隔离容器
pressure level measuring device,壓力液位測量裝置
pressure loss,壓力損失
pressure measuring set,壓力測量儀
pressure microphone,壓強傳聲器
(pressure) multiplier,倍壓器
