Chemical News and Journal of Industrial Science, Tomy 139-140Chemical news office., 1929 |
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Strona 174
... copper and alumin- ium - silicon alloys , when annealed at various temperatures . The laws of precipitation during constant temperature annealing , and the influence of temperature on the speed of precipitation , have been studied . A ...
... copper and alumin- ium - silicon alloys , when annealed at various temperatures . The laws of precipitation during constant temperature annealing , and the influence of temperature on the speed of precipitation , have been studied . A ...
Strona 190
... copper , the severer forms are caused by the action of water leaking between stays and plate , this leak- age water bringing about the loosening of the hard adherent oxide scale normally formed on arsenical copper in a firebox , and ...
... copper , the severer forms are caused by the action of water leaking between stays and plate , this leak- age water bringing about the loosening of the hard adherent oxide scale normally formed on arsenical copper in a firebox , and ...
Strona 294
THE COPPER SITUATION IN CANADA . The first recorded production of copper in Canada was in 1886. British Columbia has been for many years the principal source of production but Ontario has also contributed substantially and within a few ...
THE COPPER SITUATION IN CANADA . The first recorded production of copper in Canada was in 1886. British Columbia has been for many years the principal source of production but Ontario has also contributed substantially and within a few ...
Spis treści
THE CHEMICAL NEWS | 18 |
Professor Leonard Hill on Right | 24 |
By DR W TOMBROCK | 129 |
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