求翻译：通过分析不同属稀有放线菌的生理生化特性，掌握各属放线菌的生活习性及代谢特征，积极开发和优化定向培养方法，完成对样品中稀有放线菌的分离筛选，进而从中开发更多的新型化合物，应用于工农业生产的各个领域。是什么意思？

Through analysis of different actinomycetes are rare physiological and biochemical characteristics, is a master of the actinomycetes habits and metabolic characteristics, and actively develop and optimize the orientation training methods, the sample completed the separation of rare actinomycetes scr