Chemical News and Journal of Industrial Science, Tom 145,Wydanie 3770Chemical news office., 1932 |
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Strona 24
... effect of it rotation . The rock is ground out ; and water or other fluid - passing downwards through the interior of the pipe and upwards around it , flushes the boring and expels the drilled rock at the surface . In order to prevent ...
... effect of it rotation . The rock is ground out ; and water or other fluid - passing downwards through the interior of the pipe and upwards around it , flushes the boring and expels the drilled rock at the surface . In order to prevent ...
Strona 27
... effects of size , shape , etc. , from the limited material at their disposal . Frequently , indeed , only the coefficient of total cooling was determined , no attempt being made to separate radiation and con- vection . Most subsequent ...
... effects of size , shape , etc. , from the limited material at their disposal . Frequently , indeed , only the coefficient of total cooling was determined , no attempt being made to separate radiation and con- vection . Most subsequent ...
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activity adopted applied boring Buildings calculated carbon Communicated compared completed conduction considerably Controller convection cool countries define depth described determination direct discovery distribution drilling effect elastic emitted existence experience experimental explosion fact factor field flame flowing fuel furnace further gases given heat transfer important increased industry instance Institute for Medical interest issued June knowledge known laboratories late limited London lower Marks mass measured Medical Research medium ment method National Institute nature nights obtained Office operates original Patent path petroleum possible practical present pressure principles processes production proportion published quantities radiation recently recommended recorded reduced regions Research reservoir rock scientific shape simple solids square standard preparation station steam structural studied suitable surface temperature tion underground unit values vapour various vitamin waves workers