If an application does not require the structure or editing capabilities provided by the dom , the 如果应用程序不需要dom提供的结构或编辑功能,则xmlreader和xmlwriter类提供对xml的非缓存的只进流访问。
In general , spiral pipe flows are generated by three means : tangentially inletting medium , guiding fluid by vanes with a certain angle and axially rotating pipe 一般来说,螺旋流的常规产生办法有三种:切向进流、安装导流条及旋转管道。
Prof . horii has invented three new types of spiral flow generators . they are applied in area of engineering practice . in this paper , we depicted the actuality and background of this type of spiral flow , illustrated the important significance of its applications in engineering and basic theory 日本horii教授发明的三种自发生成螺旋流的装置引起人们研究的兴趣,本文叙述了国际上对此类螺旋流研究的现状和背景,阐明了螺旋流研究在工业应用上和基础理论上的重要意义,针对“环状轴对称开口径向进流”旋流发生装置进行了实验研究。