这种控制条件可由线性化折线型本构关系表征，其本构关系是广义的，包括弹性、塑性、接触及其组合单元。
The conditions can be characterized by "polygonal" constitutive laws which influence behaviour of materials, such as elastic, elasto-plastic, contact problems and their combinations.
研究开发阶段的划分和满足资本化的条件弹性较大，给企业操纵利润留下了机会；
The elasticity is large between the division of research development stage and the condition of capitalization, which leaves opportunity for the enterprise to manipulate profit.
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