无论是对于具体的工程科技，还是抽象的如何组织生产，支撑市场，管理总需求，情况都是如此。
That is true of hard engineering technology as well as the tacit knowledge of how best to organise production, support markets and manage aggregate demand.
并对供应商管理库存模式下零售商总需求为常数和为函数的两种情况建立模型，并利用迭代的方法求解需求为函数时的算例。
Then a model with invariable demand and a model with function demand under vendor managed inventory mode were established respectively, and the iterative method was used to solve the later case.
1998年至今的四年中，大陆宏观经济政策的操作，基本上属于凯恩斯的需求管理，侧重于短期内应付总需求不足。
During the last four years the mainland's macroeconomic policy has been basically Keynesian's demand management to due to short-term aggregate demand.
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