Nature, Volume 102Sir Norman Lockyer Macmillan Journals Limited, 1918 |
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Página 14
... tungsten furnishes a striking and instructive illus- tration of the neglect to utilise the resources of the Empire or to work in our own territory the minerals won under the British flag . Under the stress of war conditions the ...
... tungsten furnishes a striking and instructive illus- tration of the neglect to utilise the resources of the Empire or to work in our own territory the minerals won under the British flag . Under the stress of war conditions the ...
Página 74
... TUNGSTEN STEELS . MANY investigations of tungsten steels have been made , but there has , as yet , been no sys- tematic study of them , and their structural constitu- tion is almost unknown . The steels themselves have long been ...
... TUNGSTEN STEELS . MANY investigations of tungsten steels have been made , but there has , as yet , been no sys- tematic study of them , and their structural constitu- tion is almost unknown . The steels themselves have long been ...
Página 75
... tungsten and carbon . In the normal state the tungsten carbide and iron carbide exist as a double carbide , 4Fe , C.WC , which has its critical point at 400 ° C. as compared with 725 ° C. for pure iron carbide . Above the Ac , point ...
... tungsten and carbon . In the normal state the tungsten carbide and iron carbide exist as a double carbide , 4Fe , C.WC , which has its critical point at 400 ° C. as compared with 725 ° C. for pure iron carbide . Above the Ac , point ...
Índice
as a School Subject Prof T P Nunn 395 | 97 |
Bacteriology Applied Edited by Dr C H Browning | 104 |
Bengal and Bihar and Orissa Department of Fisheries for | 193 |
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