建立了带有冷凝水闪蒸和额外蒸汽引出的并流多效蒸发系统工艺计算的数学模型，用计算机辅助计算方法求解。
The model of cocurrent multi-effect evaporation with extra vapor elicitation and condenser water flash is established. A computer-aided calculating method is presented.
利用此类蒸汽可能代价不菲，因为这不仅要消耗额外的建筑材料，而且要求所用的建材更为牢固以经受更高的压力和温度。
Tapping this steam would be expensive, since it would require not only extra building materials, but also more durable ones, to cope with the higher pressures and temperatures.
蒸汽电厂按照合同约定应每小时额外提供160吨的蒸汽，大约与一座锅炉的蒸汽产量相等。
Steam stations are contractually obligated to operate with 160 tons per hour of spare steam, which is approximately equal to the steam output from one boiler.
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