直观手段 meaning in Chinese

intuitional means

Also , art means that the degree of perfection of shape , structure and skills . cai processes and manages the abstract principles , concepts , definitions and rules by images , texts and languages so that the students can understand and receive the teaching procedures
Cai课件是借助图像、文本、语言等直观手段将抽象的原理、概念、定义、法则等经过加工、处理，使学生易于理解和接受的教学程序。