Английский для сварщиков. Гричин С.В. - 87 стр.

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87
4. acetone D. In chemistry, (also known as propanone, dimethyl ketone,
2-propanone, propan-2-one and β-ketopropane) it is the
simplest representative of the ketones. It is a colorless mobile
flammable liquid with melting point at −95.4 °C and boiling
point at 56.53 °C. It has a relative density of 0.819 (at 0 °C). It
is readily soluble in water, ethanol, ether, etc., and itself
serves as an important solvent. The most familiar household
use of it is as the active ingredient in nail polish remover. It is
also used to make plastic, fibers, drugs, and other chemicals.
5. aluminum E. A silvery and ductile member of the poor metal group of
chemical elements. In the periodic table it has the symbol Al
and atomic number 13. It is found primarily in the bauxite ore
and is remarkable for its resistance to corrosion (due to the
phenomenon of passivation) and its light weight. It is used in
many industries to manufacture a large variety of products
and is very important to the world economy. Structural
components made from this metal and its alloys are vital to
the aerospace industry and very important in other areas of
transportation and building.
6. carbon F. A chemical element in the periodic table that has the
symbol C and atomic number 6. An abundant nonmetallic,
tetravalent element, it has several allotropic forms. It occurs in
all organic life and is the basis of organic chemistry. This
nonmetal also has the interesting chemical property of being
able to bond with itself and a wide variety of other elements,
forming nearly ten million known compounds. When united
with oxygen it forms carbon dioxide, which is vital to plant
growth. When united with hydrogen, it forms various
compounds called hydrocarbons which are essential to
industry in the form of fossil fuels.
7. oxy-gas
torch
G. A blowtorch has several meanings, which deal with tools
that consume fuel. It may mean a cutting torch, a handheld
torch used for cutting metal.
8. natural gas
H. Commonly referred to as gas, is a gaseous fossil fuel
consisting primarily of methane. It is found in oil fields and
natural gas fields, and in coal beds. When methane-rich gases
are produced by the anaerobic decay of non-fossil organic
material, these are referred to as biogas. Sources of biogas
include swamps, marshes, and landfills (see landfill gas), as
well as sewage sludge and manure by way of anaerobic
digesters, in addition to enteric fermentation particularly in

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