继承与多型 差异编程 继承( inheritance) 的第一种使用模式是差异编程( program by difference), 精神上是 data abstraction 的直接扩充。
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By using an explicit finite difference program FLAC3D, a model of numerical calculation is established for a deep mining pillar with dynamic disturbance under high stress.
对深部矿柱在承受高静载应力时的动力扰动力学模型进行应力波传播力学响应分析，采用FLAC3D有限差分程序对深部开采圆形矿柱进行高应力下动力扰动数值计算。
The main difference between our test program and other ones is its knowledge-based character, which is supported by a massive commonsense knowledge base.
研究区别于其他人的主要之处是该测试程序是基于知识的，它依靠一个海量常识知识库的支持。
Numerical simulate: the finite difference program was compiled to simulate solute concentration distribution with time and distance. its property was proved by the soil trough experimental model.
数值模拟部分，根据实验条件编制有限差分法程序，以土槽实验模型为例验证了程序编制的正确性，同时模拟了溶质浓度的时空分布规律。
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