control piece meaning in English

对照件

Keywords control piece , database , engineering ， face to the object
关键词控件、库、数据库、工程、面向对象。
The multi - medium teaching material unified making system is composed of the rich variable and function supplied by authorware6 . 0 , and unites other external functions ( ie . * . u32 , * . dll etc . ) and control pieces , and is also a authorware6 . 0 source file that integrates the guide , teaching material and formwork
《多媒体教材制作系统》是一个利用authorware6 . 0所提供的丰富的变石页士学位论文mast丁二r ’ s日if从l凡量、函数，结合其它的外部函数(如* . u : 32 、 * . dll等) 、控件等编写而成的，它是一个集向导、教材和模板于一体的authorware6 . o源文件。