Mining Engineers' Handbook, Volume 1Robert Peele, John Adams Church J. Wiley & sons, Incorporated, 1941 |
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Halaman 17-5
... BEARING of a line , that is , the horizontal angle between the line and a magnetic needle . The needle is balanced on a pivot in center of a circular box , the edge of which is usually graduated in half - degrees and is numbered from 0 ...
... BEARING of a line , that is , the horizontal angle between the line and a magnetic needle . The needle is balanced on a pivot in center of a circular box , the edge of which is usually graduated in half - degrees and is numbered from 0 ...
Halaman 17-19
... bearing of each line should be read , when practicable , and compared with calculated bearing . The calcu- lated bearing of first line is assumed to be its observed bearing ; the calculated bearing of any line is obtained from calculated ...
... bearing of each line should be read , when practicable , and compared with calculated bearing . The calcu- lated bearing of first line is assumed to be its observed bearing ; the calculated bearing of any line is obtained from calculated ...
Halaman 41-12
... bearing surfaces ; it must not decompose nor evaporate at ordinary working temp ; it must contain no acid , which may injure bearing surfaces ; its coeff of friction must be low ; it must be as fluid as is consistent with the required ...
... bearing surfaces ; it must not decompose nor evaporate at ordinary working temp ; it must contain no acid , which may injure bearing surfaces ; its coeff of friction must be low ; it must be as fluid as is consistent with the required ...
Isi
COMPRESSED AIR PRACTICE | 15-2 |
Appli | 15-15 |
Hydraulic Compressors | 15-22 |
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