The World's Work, Svazek 60Doubleday, Page & Company, 1931 |
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Výsledky 1-3 z 81
Strana 27
... light showing across the door and into a photocell . Limbs , even life itself , may be saved by this small device which has more control over the mighty motors in the top of the shaft than the operator himself . A beam of light shining ...
... light showing across the door and into a photocell . Limbs , even life itself , may be saved by this small device which has more control over the mighty motors in the top of the shaft than the operator himself . A beam of light shining ...
Strana 52
... light was to be seen , or by repeated bearings on the same station with the distance logged between bear- ings , or by a single bearing and dead reckoning - in short , by those means which he had formerly applied to visible objects ...
... light was to be seen , or by repeated bearings on the same station with the distance logged between bear- ings , or by a single bearing and dead reckoning - in short , by those means which he had formerly applied to visible objects ...
Strana 55
... light which hails our incoming liner . A diaphone operated by compressed air is the sound signal of this particular vessel . A clock controls the supply of air and operates the blasts which , emanating from a four - way horn , rend the ...
... light which hails our incoming liner . A diaphone operated by compressed air is the sound signal of this particular vessel . A clock controls the supply of air and operates the blasts which , emanating from a four - way horn , rend the ...
Obsah
FINANCE and INVESTMENT Investing Twenty Mil | 28 |
Mar | 100 |
34 | 111 |
Autorská práva | |
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