September 2022

6 Minutes
Chemistry Science Technology

Smelter (Foundry) a machine for taking metal out of rock by heating it to a very high temperature

A smelter is a smelting machine for removing metal from rock by heating it to very high temperatures. This form of extractive metallurgy is suitable for extracting metals such as tin, lead, copper, iron,...
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5 Minutes
Languages

English prepositions on, in, at, of, for, from , to, into, by, across, around, near, with, about, along…

English prepositions on, in, at, of, for, from , to, into, by, across, around, near, with, about, along… A preposition is an invariable word, which introduces, according to a certain relationship of meaning, a...
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