The New Encyclopædia BritannicaEncyclopædia Britannica, 1983 - Encyclopedias and dictionaries |
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Page 14
... abrasives are too variable in their properties . Natural abrasives , however , are still important . Diamond . Diamond is the hardest abrasive , and in fact the hardest material known . India was the main source of diamonds until the ...
... abrasives are too variable in their properties . Natural abrasives , however , are still important . Diamond . Diamond is the hardest abrasive , and in fact the hardest material known . India was the main source of diamonds until the ...
Page 16
... abrasive action . Attrition resis- tance is the name given to this third , very significant property . Preparation and sizing . All abrasives , with the ... abrasive grains , depending on the particular requirements of the work 16 Abrasives.
... abrasive action . Attrition resis- tance is the name given to this third , very significant property . Preparation and sizing . All abrasives , with the ... abrasive grains , depending on the particular requirements of the work 16 Abrasives.
Page 17
... abrasive in nature . Glass beads , pres- sure blasted onto a surface , remove rust , scale , and car- bon . These have replaced much hand cleaning with steel wool . Steel wool still has some applications . INDUSTRIAL APPLICATIONS ...
... abrasive in nature . Glass beads , pres- sure blasted onto a surface , remove rust , scale , and car- bon . These have replaced much hand cleaning with steel wool . Steel wool still has some applications . INDUSTRIAL APPLICATIONS ...
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accelerator acid activity Adams administrative advertising Aeschylus aesthetic Africa agriculture animals appear become body called Central century changes contains continued cost countries crops cultural dance early East effect electrons elements engineering established example farm feet field figures flight followed function human important increase industry influence Italy Khoisan Knossos known Lake land languages later less living major materials means ment natural occur operations organization original patterns percent performance period plants play political population present production range region remains represented result River society sound South southern species structure style theory tion traditional United usually variety West Western widely