Ilm

METALLHOI IShQORI, elementhoi guruhchai asosii guruhi I sistemai davrii Mendeleev; litiy (Li), natriy ( Na), kaliy (K), rubidiy (Rb), seziy (Cs) va fransiy (Ft). Onhoro baroi on Metalhoi ishqori menomand, ki gidroksidashon ishqori zur meboshad. Metalhoi ishqori az jihati khimiyavi metallhoi faol buda, faolii onho az litiy to fransiy meafzoyad.

METALLURGIYaI RANGA, yak sohai muhimi sanoati vaznin buda, prosesshoi hosil va boygardonii madan, istehsolu korkardi metallkhoi ranga va khulai onho, inchunin hosil kardani almosro dar bar megirad. Metallurgiyai Ranga dar barobari istehsoli metallho va khulai onho mahsuloti prokatu mashanavi, khulahoi sakht, khokai metallkho, namakho va payvasthoi gunoguni metallhoi ranga, metallhoi …

METALLURGAYaI SIYOH yak sohai sanoati vaanin buda, istehsoli chuyan, pulod, prokat, gulbahoi pulodin va chuyani, forrokhulzho va dar bar megirad, Metallurgiyai siyoh dar muassisahoi «Tojiktekstilmash» ba nomi Dzerjinskiy (Dushanbe), «Avtozapchast» (Konibodom), «Torgmash» (Dushanbe), «Tojikgidroagregat», zavodi armaturii ba nomi G. K. Orchonikyadze (Dushanbe) vujud doraid, Nig. niz Metallurgiya.

METALLShINOSI, ilmest, ki vobastagii baynii tarkib, sokhti dokhili va khosiyathoi metallu khulaho, inchunin qonuniyathoi tagyiryobii khosiyathoi onhoro hangomi tasiroti harorati, mekhaniki, fizikiyu khimiyavi va g. meomuzad, Metallshnosi baroi justujuhoi ilmii tarkib, usulhoi tayyorkuni va korkardi masolehi metallii khosiyathoi mekhaniki, fiziki va khimiyaviashon gunogun asosi ilmi meboshad. Hosil kardani khulahoi metalli …

METALLHOI ASIL, tillo, nuqra, platina va metallhoi guruhi platiny (palladiy, iridiy, rodiy, rutenii va osmiy)-ro guyand, ki az jihati khimiyavi khele ustuvor buda, namudi okhirinashon zebost. Gayp az in, tillo, nuqra va platina qobiliyati khubi plastiki doshta, metallhoi guruhi platiny boshand, dushvorgudozand. In khosiyati purqimmati Metallhoi asil baroi hosil kardani …

METALLIDHO, payvasthoi intermetalli, payvasthoi metalli, fazahoi intermetalli, fazahoi mobayni, payvasthoi khimiyavie, ki az ba hampayvastshavii metallho hosil meshavand. Ba Metallidho payvasthoi metallhoi mutavassit bo baze nometallho (N, V, S, N va g.) niz dokhil meshavand. Metallidhoro dar natijai tasiri hamdigarii metallho (dar harorati baland) hosil mekunand. Tarkibi M. ba valentnokii …

METALLOGENIYa (az metall va yun. geneia — paydoish, ba vujud omadan), yak fasli ilm oid ba sarvathoi zerizamini buda, qonuniyati regionalii paydoish va joygirshavii qoidai madanro meomuzad. Asosguzoroni M. dar SSSR — V. A. Obruchev, S. S. Smirnov, Yu. A. Bilibin; dar khorija — geologi fransavi L. de Lone. Vazifai …

METAZABON (az meta… va zabon), yake az mafhumhoi asosii mantiq va zabonshinosii nazariyavii hozira, bo ki baroi tahqiqi mubohisahoi gunoguni mantami matematiki, inchunin zabonhoi mukhtalifi tabii baroi tasviri munosibathoi bayni zabonhoi «saviyahoi» gunogun, tavsifi munosibathoi bayni zabonhoi tahqiqshavanda va voqeiyati dar onho munaqisshuda istifoda meshavad. Bo yorii Metazabon tarkibi iboravii …

METALL, fuluzot, moddahoi soddaeand, ki dar sharoiti muqarrari qobiliyati balandi elektr va garmiguzaroni, koeffisienti haroratii manfii elektrguzaroni, qobilityati ba khubi aks kardani mavjhoi elektrmagniti va khosiyati plastiki dorand. Metall dar holati sakht sokhta kristalli dorad, dar holati bur boshad, yakatoma ast. Hamai khosiyathoi nombarshuda ba sokhti elektronii Metall vobasta ast. …

META… (az yun. meta — bayni, bad, ba vositai), yak hissai avvali tarkibii kalimahoi murakkabest, ki fosila, az pasi yagon chiz raftan, ba yagon chizi digar guzashtan, digarshavii holat, tabdilyobiro ifoda mekunad. Mas., metabolizm, metagalaktika, metagenez va g.