Line search - a technique for one dimensional optimization, usually used as a subroutine for other, more general techniques.

线搜索-技术，一维的优化，通常用作其他子程序，更普遍的技术。

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Based on general software MARC, a user subroutine CRPLAW used for single crystal creep analysis has been developed.

基于通用有限元软件MARC开发了用于模拟单晶合金材料蠕变性能的用户子程序CRPLAW。

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The user material subroutine UMAT provided by the general software ABAQUS was used for programming for Shenzhujiang s double-yield surface model of earth rockfill materials.

利用ABAQUS提供的用户材料子程序UMAT的二次开发平台开发土石料的沈珠江双屈服面模型，并以一面板堆石坝为例，结合ABAQUS的“单元增加/去除”技术进行了坝体施工和水库蓄水的仿真分析。

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