- refractory element
- тугоплавкий элемент
English-Russian small dictionary of medicine. 2015.
refractory element
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Refractory period — In physiology, a refractory period is a period of time during which an organ or cell is incapable of repeating a particular action, or (more precisely) the amount of time it takes for an excitable membrane to be ready for a second stimulus once… … Wikipedia
Heating element — A heating element converts electricity into heat through the process of Joule heating. Electric current through the element encounters resistance, resulting in heating of the element. Most heating elements use Nichrome 80/20 (80% nickel, 20%… … Wikipedia
Chemical element — The periodic table of the chemical elements A chemical element is a pure chemical substance consisting of one type of atom distinguished by its atomic number, which is the number of protons in its nucleus.[1] Familiar examples of … Wikipedia
transition element — Chem. any element in any of the series of elements with atomic numbers 21 29, 39 47, 57 79, and 89 107, that in a given inner orbital has less than a full quota of electrons. Also called transition metal. [1920 25] * * * Any chemical element with … Universalium
Rare earth element — Rare earth ore, shown with a United States penny for size comparison These rare … Wikipedia
Group 6 element — Group → 6 ↓ Period 4 24 Cr 5 … Wikipedia
Group 7 element — Group → 7 ↓ Period 4 25 Mn 5 … Wikipedia
Group 11 element — Group → 11 ↓ Period 4 29 Cu 5 … Wikipedia
Group 10 element — Group 10 redirects here. For the rugby league competition, see Group 10 Rugby League. Group → 4 ↓ Period 4 … Wikipedia
Group 9 element — Group → 4 ↓ Period 4 27 Co 5 … Wikipedia
Group 4 element — In modern IUPAC nomenclature, Group 4 of the periodic table contains the following chemical elements: * titanium (Ti) * zirconium (Zr) * hafnium (Hf) * rutherfordium (Rf).This group lies in the d block of the periodic table. The group itself has… … Wikipedia
