为解决实际生产中一种无调整费用的生产计划问题，给出了一个双目标混合整数规划模型。
A model of double objective mixed integral programming for settling production planning problems without the cost of adjustment was established.
本文为混合型TEA—CO_2激光器亚阀值单模多线运转提出了一种改进的速率方程模型。
A rate equation model is described in this paper for the single mode multiline emis- sion from a hybrid TEA-CO_2 laser for subthreshold operation of CW section.
在使用混合像元线性分解基本模型的同时，也结合研究目标对其进行了改进与补充，效果令人满意，为中等植被覆盖区的专题信息的提取提供了一种方法。
Field survey and other information show that the practice of this paper can be adopted to extract thematic information for such areas with medium vegetation cover.
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