定于 due to; scheduled to 飞机定于今天四点十五分到达。 the plane is due at 4:15 this afternoon. 他定于明日到达伦敦。 he is due in london tomorrow. 比赛定于星期六举行。 the game is scheduled for saturday. 总统定于明日发表演说。 the president is scheduled for a speech tomorrow
This article introduces du dingyou ' s thoughts about library . he did a lot of researches in the basic theory in library 、 classification 、 local literature 、 library construct and library science education , etc . his thoughts exert great influence on the cause of our library development 文章介绍了杜定友先生在图书馆学基础理论、图书分类学与目录学、地方文献研究、图书馆事业建设、图书馆学教育等方面的主要成就,评价其学术思想对我国图书馆事业发展产生的深刻影响。