Bulletin, Брой 245U.S. Government Printing Office, 1927 |
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Често срещани думи и фрази
advancing amount anthracite region approximately areas average block boreholes bottom break breasts capacity cars cent centers chamber clay coal colliery completed connecting continue conveyor cost cross developed difficulty district driven Dunmore employed engine extends face feet thick feet wide field Figure fire floor foot four gangway gives handling hard heading hoisting inches increased laborer length less lines loaded longwall lost lower machine method Middle miner mining methods Moisture moved necessary obtained opening Operating packed permit pillars pipe pitch possible present probably production props pulled recovered recovery removed roadways rock roof rope sandstone scraper second mining shaking chute shown shows side silt slice slope space surface Table taken territory thin beds timber turned Twin upper valley
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Страница 6 - ... programming any code may be produced. For example, if the data collected from experiments must be processed on machines which use only IBM code, the PDP-8 computer can be programmed ASCII to IBM. Figure 7 shows the alphabet in ASCII and comparison. Figure 6. High-speed punch. 12345 678 1234 z Y X W V U T S R Q P 0 N M L K J I H G F E D C B A 9 8 7 6 5 4 3 2 I 0 ASC II Figure 7.
Страница 1 - Mining of Thin Coal Beds in the Anthracite Region of Pennsylvania, by DC Ashmead.
Страница 67 - It was originated by a Catholic priest in the city of Shenandoah in 1864, who, in the hope of saving his church from destruction by subsidence...