| Kanji 漢字 / Romaji 音韻 | Kana / Hiragana / Phonetic | Definition |
| PR | ぴー・あーる | public relations / (BUS) |
| PR | pi ^ . a ^ ru |
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| PID制御 | ぴーあいでぃーせいぎょ | PID control (13) |
| PID seigyo | pi ^ aidei ^ seigyo |
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| PISO法 | ぴーあいえすおうほう | PISO method (pressure implicit with splitting operators) (1) |
| PISO hou | pi ^ aiesuouhou |
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| PI制御 | ぴーあいせいぎょ | PI control (13) |
| PI seigyo | pi ^ aiseigyo |
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| PVD法 | ぴーぶいでぃーほう | physical vapour deposition method (8) |
| PVD hou | pi ^ buidei ^ hou |
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| PWM | ぴーだぶりゅえむ | pulse width modulation (13) / PWM (13) |
| PWM | pi ^ daburyuemu |
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| PWS | ぴーだぶりゅえす | pressure wave supercharger (11) |
| PWS | pi ^ daburyuesu |
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| PDA | ぴーでぃーえー | personal digital assistance (1) |
| PDA | pi ^ dei ^ e ^ |
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| PD制御 | ぴーでぃーせいぎょ | PD control (13) |
| PD seigyo | pi ^ dei ^ seigyo |
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| PAN | ぴーえーえぬ | polyacrylonitrile (8) |
| PAN | pi ^ e ^ enu |
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| PFBC | ぴーえふびーしー | pressurized fluidized bed combustion (12) |
| PFBC | pi ^ efubi ^ shi ^ |
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| PFM | ぴーえふえむ | proto flight model (5) |
| PFM | pi ^ efuemu |
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| pH調整 | ぴーえいちちょうせい | pH control (3) |
| pH chousei | pi ^ eichichousei |
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| PM | ぴーえむ | proto model (5) |
| PM | pi ^ emu |
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| PMC | ぴーえむしー | polymer matrix composites (8) |
| PMC | pi ^ emushi ^ |
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| PNL | ぴーえぬえる | perceived noise level (3) |
| PNL | pi ^ enueru |
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| PS | ぴーえす | payload specialist (5) |
| PS | pi ^ esu |
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| PSD | ぴーえすでぃー | position sensitive device (14) |
| PSD | pi ^ esudei ^ |
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| PSA法 | ぴーえすえーほう | pressure swing adsorption (4) |
| PSA hou | pi ^ esue ^ hou |
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| P-S-N線図 | ぴーえすえぬせんず | P-S-N diagram (7) |
| P-S-N senzu | pi ^ esuenusenzu |
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| PSコンクリート | ぴーえすこんくりーと | pre-stressed concrete (12) |
| PS konkuri^to | pi ^ esukonkuri ^ to |
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| PSTM | ぴーえすてぃーえむ | photon scanning tunneling microscope (15) |
| PSTM | pi ^ esutei ^ emu |
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| P波 | ぴーは | primary wave (7) |
| P nami | pi ^ ha |
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| p−法 | ぴーほう | p adaptation method (1) |
| p - hou | pi ^ hou |
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| PERT | ぴーいーあーるてぃー | program evaluation and review technique (19) |
| PERT | pi ^ i ^ a ^ rutei ^ |
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| PETボトル | ぴーいーてぃーぼとる | PET bottle (3) |
| PET botoru | pi ^ i ^ tei ^ botoru |
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| PET(陽電子放出断層撮影装置) | ぴーいーてぃーようでんしほうしゅつだんそうさつえいそうち | positron emission tomography (2) |
| PET ( youdenshi houshutsu dansou satsuei souchi ) | pi ^ i ^ tei ^ youdenshihoushutsudansousatsueisouchi |
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| ピーキングファクタ | ぴーきんぐふぁくた | peaking factor (12) |
| pi^kingufakuta | pi ^ kingufakuta |
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| ピーク値 | ぴーくち | peak value (13) / peak magnitude (13) |
| pi^ku atai | pi ^ kuchi |
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| ピーク値計数法 | ぴーくちけいすうほう | peak counting method (7) |
| pi^ku atai keisuu hou | pi ^ kuchikeisuuhou |
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| ピーク負荷用発電 | ぴーくふかようはつでん | peak load power generation (12) |
| pi^ku fuka you hatsuden | pi ^ kufukayouhatsuden |
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| ピーク応力 | ぴーくおうりょく | peak stress (7) |
| pi^ku ouryoku | pi ^ kuouryoku |
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| ピークツーピーク値 | ぴーくつーぴーくち | peak-to-peak value (13) |
| pi^kutsu^pi^ku atai | pi ^ kutsu ^ pi ^ kuchi |
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| ピーニング | ぴーにんぐ | peening (8) |
| pi^ningu | pi ^ ningu |
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| POP | ぴーおーぴー | point of production (20) |
| POP | pi ^ o ^ pi ^ |
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| P-P値 | ぴーぴーち | P-P value (13) |
| P-P atai | pi ^ pi ^ chi |
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| ppm | ぴーぴーえむ | parts per million (3) |
| ppm | pi ^ pi ^ emu |
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| PC | ぴーしー | programmable controller (19) |
| PC | pi ^ shi ^ |
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| PCVシステム | ぴーしーぶいしすてむ | positive crankcase ventilation system (11) |
| PCV shisutemu | pi ^ shi ^ buishisutemu |
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| PCM事故 | ぴーしーえむじこ | power-cooling mismatching accident (12) |
| PCM jiko | pi ^ shi ^ emujiko |
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