Ermetova jamila ismailovna ermetov amirbek ismailovich karimova munisa maxsud qizi

platinum– a heavy, grayish-white, highly malleable and ductile metallic element, resistant to most chemicals, practically unoxidizable except in the presence of bases, and fusible only at extremely high temperatures: used for making chemical and scientific apparatus, as a catalyst in the oxidation of ammonia to nitric acid, and in jewelry. Symbol: pt; atomic weight: 195.09; atomic number: 78; specific gravity: 21.5 at 20°c

plutoniy - (234-gachasi plastinum 239 gacha) bir to'siqli izotopi bilan transuranik element bo'lib, unda ishlab chiqarilmaydigan uran 238 dan olinishi mumkin. Ramz: pu; atom raqami: 94		plutonium – a transuranic element with a fissile isotope of mass number 239(plutonium 239) that can be produced from non-fissile uranium 238, as in a breeder reactor. Symbol: pu; atomic number: 94.
po‘kak– o'rta er dengizi mamlakatlari, quercus suber, eman daraxtining tashqi qobig'i, shisha idishlarni tayyorlash uchun ishlatiladigan, suzib yuradigan va boshqalar		cork– the outer bark of an oak, quercus suber, of mediterranean countries, used for making stoppers for bottles, floats, etc.
po‘lat– sun'iy ravishda ishlab chiqarilgan, temir va shag'alli temirdan kattaroq uglerodli tarkibga ega bo'lgan va tuzilishga va issiqlik bilan ishlov berishga ko'ra o'zgarib turadigan qattiqlik, elastiklik va kuchga ega bo'lgan temirning turli modifikatsiyalangan shakllaridan har biri: odatda yuqori, o'rta va past uglerodli tarkibga ega.		steel– any of various modified forms of iron, artificially produced, having a carbon content less than that of pig iron and more than that of wrought iron, and having qualities of hardness, elasticity, and strength varying according to composition and heat treatment: generally categorized as having a high, medium, or low-carbon content.