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      Hassan Mohamed
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    8-2-2 :

    ( ) ( 10 20 ). ( BM) (8-1):
    h = H N
    3 . 3 h H 3 ( tilt ) ( ).

    tilted plane . . 3 ( h H) more reliability 3 3 3 - check 3 . ( ) polynomials ( h H). : :

    N = 13.825 + 0.00003105 E + 0.00000297 N
    E, N - ETM. 2.9 8 4 / ( ) 12.6 12 8 / ( )

    :


    ( extrapolation N ).
    ( ).
    () .
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