最低成本估算与调度法：least-cost estimating and scheduling system 最低潮位：lowest low water level ..
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...duling system : 序贯调度系统 least-cost estimating and scheduling system : 最低成本估算与调度法，最低成本估算与调度系统 resource allocation and multi-project scheduling (RAMPS) : 资源分配多方案程序 ..