Parovoz, lokomotive, ki muharriki on moshini bugi meboshad. Ele­menthoi asosii Parovoz inhoand: degi bug, moshini bugi, qismi ekipaj. Zakhirahoi suzishvori, ob va ravganhoi molidaniro odatan dar tender, ki ba Parovoz qush ast, choygir mekunand. Hangami dar otashdoni degi bug sukhtani suzishvori (angisht, mazut, chub, va gyra) obi deg bug meshavad. …

Parodontoz (az yunoni para — nazdi va odontos — dandon), bemorii boftai nazdi dandon (parodopt), ki hangomi on kanorahoi izofai alveolii jog kovok shuda, boisi junbidan va aftidani dandon megardad. Dar vaqthoi okhir istilohi parodontopatiya, ki avchgirii illati parodont (boftahoi milki dandon)-ro ifoda mekunad, mamul ast. Paradontopatiya aksar badi bemorii …

Osteosintez (az osteo… va sintez — chasponidan), jarrohiest, ki dar on shikastaporahoi ustukhonro (hangomi shikasti ustukhon) bo lavozimoti makhsus (mekh, vint, lavhachahoi ustukhoni) mepayvandand.

Parokanishi kombinatsionii rushnoi, effekti Ra­man, yak nav parokanishi rushnoiro az kristall, moe va gazho guyand, ki dar natijai on basomadi rushnoi tagyir meyobad. Hangomp parokanishi kombinasionii rushnoii monokhromatii basomadash v dar spektri rushnoii parokandashuda basomadhoi ilovagii v ± v,- paydo meshavand, ki in jo Sh sobitahoeand, ki moddai parokandakunandaro tav-sif …

Ostin (Austin), shahrest dar janubi Shtathoi Muttahidai Amerika , markazi mamurii shtati Tekhas. Aholiash 310 hazor naf.ar (1975; bo atrofi shahr 400 hazor nafar). Ostin markazi muhimi tijorat va sanoat ast. Ra­dioapparaturaho va baroi tadqiqothoi ilmi har guna tajhizot istekhsol mekunad. Dar Ostin korkhonahoi sanoati khimiya, khurokvori, mebel va masolehi …

Parokanishi mikrozarraho, tagyiri samti mikrozarraho hangomi ba yagon muhit yo zarra (yo khud ba gurukhi zarraho) nazdik shudani onho.  Parokanishi zarraho va atomhoi modda khangolmi barkhurd dar fizika i atom mufassal omukhta meshavad.Hangomi barkhurdi yadroi atomho asosan zarrahoi tarkibi yadro (proton, neytron) parokanda meshavand. Ba zarrai zaryadnok dar .masofhoi khurd …

Ost-Indiya (anglisi East Indies — Hindustoni Sharqi), istilohest, ki dar guzashta ba territorihoi Hinduston va baze mamlakathoi Osiyoi Janubi va Janubi Sharqi nisbat doda meshud. Ost-Indiya ba muqobili istilohi Vest- Indiya ba vujud omada bud. Evropoiho, ki jazirahoi dar bahri Karib (Ameri­ka) kashfkardai Xristofor Kolumbro ishtibohan «Hinduston» gumon karda budand, …

Parokanishi rushnoi, ba samthoi imkonpazir pareshidani dastai rushnoii dar muhit pahnshavandaro guyand. ki dar natijai tasiri mutaqobili on bo modda ba amal meoyad. Parokanishi rushnoi hamchun afkanishoti gayrikhususii modda zohir meshavad. Afkanishoti gayrikhususi natijai lappishhoi majburii elektronho dar atomi muhiti paro- kandakunanda meboshad, ki in lappishho ae tasiri shuoi aftanda …

Ostincha, asbobi nonpaziro guyand, ki az matoi pakhtagi abrayu astar burida, bar baynash pakhta guzoshta va barqad laganda karda’tayyor mekunand. Ostincha 40—50 santimetr darozi va 25—30 santimetr bar dorad. Qismi poyoni Ostincharo hangomi nonpazi ba dast mepushand, to ki dast nasuzad. Bazan Ostincharo az ostini jomai kuhna mesozand.

Paronit, masolehi magzibobi varaqa, ki bo pressonidani omekhtai asbest, kauchuk va tashkilahoi khoka hosil meshavad. Baroi jafs kardani joyhoi payvasthoi flansevii tru­boprovodho ba kor meravad. Baroi behtar kardani khosiyathoi mekhani­ki i Paronit bazan ba qabati on turi me­talli joygir mekunand, ki onro ferronit menomand.