Mining Engineers' Handbook, Volume 2Robert Peele, John Adams Church J. Wiley & sons, Incorporated, 1941 |
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Hasil 1-3 dari 74
Halaman 15-28
... gives cost of steam- and motor - driven compressors for inbye power as $ 7.50 to $ 10 per cu ft per min . In general , compressed air costs between 2 and 20 cts per 1000 cu ft , based on the factors listed above . " Compressed - air ...
... gives cost of steam- and motor - driven compressors for inbye power as $ 7.50 to $ 10 per cu ft per min . In general , compressed air costs between 2 and 20 cts per 1000 cu ft , based on the factors listed above . " Compressed - air ...
Halaman 31-8
... give the microscopic sizing analysis shown in Table 1. Comparison of the aver diam computed by the different formulas ... gives an aver that leans toward the fine end . No 12 weights the coarsest particles most heavily , and consequently ...
... give the microscopic sizing analysis shown in Table 1. Comparison of the aver diam computed by the different formulas ... gives an aver that leans toward the fine end . No 12 weights the coarsest particles most heavily , and consequently ...
Halaman 42-33
... gives a blue green light , an effic of 15 to 20 lumens per watt and comes in units of 300 to 500 watts . Sodium - vapor lamp is a new development , particularly adapted to highway lighting . It requires considerable auxiliary apparatus ...
... gives a blue green light , an effic of 15 to 20 lumens per watt and comes in units of 300 to 500 watts . Sodium - vapor lamp is a new development , particularly adapted to highway lighting . It requires considerable auxiliary apparatus ...
Isi
AND SORTING OF ORES | 15 |
ELECTRIC POWER | 16-1 |
sion Wiring | 19-1 |
Hak Cipta | |
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Istilah dan frasa umum
adjustment Aerial Tramway anthracite approx assay aver borax buckets Bur Mines capac carriers cars charge chute claim coal mines compressor concentrate conveyer copper cost crusher crushing cu ft cupel cyanide deflection diam discharge distance drill dust elev engineer explosions feed filter fire firedamp gold grade hoisting horiz intercooler labor lamp less litharge loaders loading lode long ton machine material mechanical metal method mill mineral motor operation pipe plant plate plumb-bob pump pyrite rock safety lamps sample screen shaft sheave short ton side silver sizes Sodium carbonate solution speed station steel stopes surface survey Table tape telescope temp tension tests timber tion tons Total towers track cable traction rope tramway Trans transit traverse underground usually valve vein vertical wire zinc