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Otashdoni oftobi

Otashdoni oftobi, dastgohest baroi akkumulyasiya va istifoda burdani energiyai Oftob dar pukhtupaz. Unsuri asosii Otashdoni oftobi geliokonsentra­tor (jamovarandai nuri Oftob) meboshad, ki az yak yo yakchand oina va yo linza iborat ast. Geliokonsentratori Otashdoni oftobi aksaran dar shakli para­boloid sokhta meshavad. Geliokoyasentratorro ru ba samti harakati zohirii Oftob doshta, dasti idora mekunand.

Koeffisient amali mufidi Otashdoni oftobi ba 55—60% merasad. Dar SSSR holo az tajriba tadrijan ba istifodai Otashdoni oftobi guzashta istodaand. Makhsusan dar respublikahoi Osiyoi Miyona, ki sole besh az 200 ruz Of­tob nurposhi mekunad, istifodai geliodastgohho az jumla Otashdoni oftobi peshomadhoi kalon dorad.

Инчунин кобед

SADUDDINI HAMMUI Muhammad ibni Juvayni

SADUDDINI HAMMUI Muhammad ibni Juvayni (soli tavallud nomalum — Vafot 1252), yake az namoyandagoni mashhuri …