Unknown macro: {latex}
$$
d_
Unknown macro: {orifice}
= \root 4 \of {{{\left( {1 - {{Q_s^2 } \over
Unknown macro: {Q_l^2 }
}} \right) \cdot D_
Unknown macro: {pipe}
^4 } \over {\left( {\left( {\sum K + f{{L_l } \over {D_
}}} \right) \cdot {{Q_L^2 } \over {Q_s^2 }} - \sum K - f{{L_s } \over {D_
Unknown macro: {pipe}
}}} \right) \cdot K_
^2 \cdot n_
Unknown macro: {orifice}
^2 }}}
$$