Therefore, careful selection of appropriate treatment technology is the key for wastewater treatment.
因此，慎重选择适当的处理工艺是污水处理设计的关键。
The key of technology is judgment for morphology of pseudoaneurysm and selection of occluder.
技术关键在于对膜部瘤形态的判断以及封堵器的选择。
Based on the traditional technology and the practice, some key links of pottery masks such as clay selection, filter processing, drying and baking are presented.
通过向传统学习和基于实践，论述了陶土的选择、过滤、加工、干燥与烧成等土陶脸谱烧制的几个重要工艺环节。
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