在组件开发方面，组件常常来自一个应用领域或者与其相关联。
At the component development level, components tend to come from and be related to a single application domain.
综述了角蛋白酶在基因工程和生理生化性质方面的研究，介绍了角蛋白酶的具体应用领域。
The researches on keratinase in the aspects of genetic engineering and physio-biochemical characteristics were summarized. The concrete application fields of keratinase were introduced.
文章介绍了各项洁净煤技术的主要技术特征和应用领域，以及世界各国目前在洁净煤技术方面的研究进展。
The article introduces the main technical characteristics and the application fields of clean coal technology, and it also presents the research progress on clean coal technology in many countries.
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