为此，必须尽快扩大高集海堤的过水断面，恢复西海域生态平衡。
For all of these, quick action should be taken to widen the water-crossing section of Gaoji seawall to renew back ecological balance.
对圣维南方程组进行离散后，用追赶法对各河道进行演算，由水量平衡原理对各结点进行计算，就可求得河道各断面的水流情况。
After the derivation of the Saint-Venant Equations, water level and discharge of each cross-section are derived by the recursion method and the principle of water balance.
沿观测断面方向，水平能通量净收入、底部生成能通量、波流相互作用、湍动能生成率四项基本保持平衡。
Along the observation section, the net horizontal baroclinic energy flux, the bottom generated energy flux and the wave-current interaction are balanced by the turbulence production rate.
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