advantages and quality certification, it has been widely recognized in the photovoltaic market in china...hoop is further limited by carbon steel u-shaped grooves. this design can prevent the purlin from turning
s. chang等〔13〕结合达西定律与hagen-poisenille公式〔14〕构建了膜纤维半径与膜通量关系的模型,描述了中空纤维膜中的膜污染情况。...机器学习(machine learning,ml)是一种基于以往经验或数据进行分类与回归的技术,不仅被运用于农业、气候、安全、教育、医学等行业〔4〕,也被广泛运用于污水处理领域。