Learn bridge course to the university , with respect to the core class that is their here undergraduate course last years , can rise with joining for course of the following graduate student 到大学学习桥梁课程，就是他们这里本科最后一年的核心课，可以为以后的研究生课程衔接起来。
This category has a strong emphasis on having fun and building racing skills , and is appropriate for those with less time for training , inexperienced racers , and those who just want to join for the fun of racing 该组别强调乐趣和建立骑行技术，适合训练时间较少，经验不够丰富的选手，或者是为了体验比赛乐趣的选手。
Considering development of internet and ec ( electronic commerce ) , the article discussed the conversion from bom and product structure to xml document automatically , which offers data joins for further development 考虑到因特网和电子商务的需求及发展趋势，本文的工作还包括bom表和产品结构树向xml文档的自动转化，为企业今后的发展提供了数据源上的接口。
We also discussed the staircase join algorithm for sibling axes . studies show that , staircase join for sibling axes is close to the structural join for sibling axes and shares the same characteristic of high efficiency 再次，我们将这些算法扩充到楼梯连接，讨论了兄弟关系的楼梯连接算法，研究显示，兄弟轴的楼梯连接问题与结构连接问题相近，而且提出的算法也具有较高的性能。
Efficient algorithms for evaluating ancestor - descendant and parent - child relationships have been proposed . whereas the problems of evaluating preceding - sibling - following - sibling and preceding - following relationships are still open . in this paper , we studied the structural join and staircase join for sibling relationship 在处理xpath查询时，各种结构关系的处理经常被转化为各种连接操作，主要是结构连接structural join和楼梯连接staircase join 。
