Ermetova jamila ismailovna ermetov amirbek ismailovich karimova munisa maxsud qizi

vacuum crystallizer– an enclosed space from which matter, especially air, has been partially removed so that the matter or gas remaining in the space exerts less pressure than the atmosphere (opposed to plenum).

valentlik –atom yoki guruhlar sonini belgilaydigan sifat, kimyoviy jihatdan har qanday yagona atom yoki guruh birlashtiriladi		valence– the quality that determines the number of atoms or groups with which any single atom or group will unite chemically.
valentlik elektroni–atomning elektron qobig'ida (atomning valenta qobig'i) joylashgan elektronni boshqa atomga o'tkazilishi yoki almashishi mumkin.		valence electron– an electron of an atom, located in the outermost shell (valence shell)of the atom, that can be transferred to or shared with another atom.
vanadiy–ba'zi bir minerallarda yuzaga keladigan noyob element va kumushrang shaffof yoki shishasimon metall kabi ochiq-kul rang kukun sifatida olinadi: uni mustahkamlash va uning zarba qarshiligini kuchaytirish uchun po'lat element sifatida ishlatiladi. Belgilar: v; atom og'irligi: 50.942; atom raqami: 23; o'ziga xos tortishish: 5.96.		vanadium – a rare element occurring in certain minerals and obtained as a light-gray powder with a silvery luster or as a ductile metal: used as an ingredient of steel to toughen it and increase its shock resistance. Symbol: v;atomic weight: 50.942; atomic number: 23; specific gravity: 5.96.