Таджикистан – Энциклопедия на таджикском языке КИТОБАМ

POLYaROGRAFIYa, usuli elektrokhimiyavii tahlili sifati va miqdori, inchunii omuzishi kinetikai prosesshoi khimiyavist. Polyarografiya ba tadqiqi kajihoi voltamperi (polyarogrammaho)-e asos yoftaast, ki hangomi elektrolizi moddai omukhtashavanda hosil meshavand. Polyarografiyaro asosan baroi muayyan kardani omekhtai metallhoi gunogun (mis, ruh, kadmiy, talliy, surb)-i tarkibi khulaho, madanho, reaktivho va gayra istifoda mebarand.

POLOTSK, shahrest dar viloyati Vitebski RSSB, dar sohili daryoi Dvinai Garbi. Uzeli kaloni rohhoi naqliyot. Aeroport dorad. Aholiash 76 hazor nafar (1977). Polotsk markazi muhimi sanoatii shimoli respublika meboshad. 3avodhoi nakhi shisha, masnuoti plastmassagi, tamiri avtomobil, rekhtagarii mekhaniki, masnuoti ohanu betoni, komb, masolehi binokori, fabkahoi mebel, duzandagi, masnuoti badei mavjudand. …

POLIVINILKhLORID, [— sn2 — — SNS1—]n, yak nav polimeri sintezi, hosilai polimerizatsiyai vinilkhlorid. Moddai sakhti safedrang, massai molekulaviash az 6000 to 1600(Kh), zichiash 1350—1430 kg/m3 ; bezahr. Polivinilkhlorid moddai khele mustahkam buda, khosiyati khubi mekhaniki va elektroizolyatsioni (dielektriki) dorad; ba rushnoi va garmi chandon tobovar nest. Dar ketonho, efirhoi murakkab, …

POLIMORFIZM (az poli… va yunoni morphos— shakl) dar biologiya. dar bayni yak namudi nabotot yo hayvonot mavjud budani fardhoi az hamdigar khele farqkunanda (az jihati simo). Polimorfizm yakchand khel meshavad: jinsi (masalan, az ham farq kardani zanburi asali narina, modina va korgar), mavsimi (masalan, digargun shudani shaklhoi baze shapalakho va …

POLYaKOV Ivan Evteevich (tavalludash 25. 11. 1914, Gomel), khodimi davlati va partiyavii soveti, Qahramoni Mehnati Sotsialisti (1973). Az oilai korgar. Azoi KPSS az soli 1940. Soli 1949 Maktabi olii partiyavii nazdi KM VKP(b)-ro khatm kard. Az soli 1933 korgar dar Gomel. Soli 1939 dar korhoi komsomoli. Solhoi 1942—1943 kotibi Komiteti …