According to gradation of tailings, the knowledge bank model can predict the strengths of cemented tailings in different contents of cement or consistence, and guide filling design in mine.

The appropriate point on a frame is provided with a film level division filling device which comprises a feed pouring tube, a film guide plate, a location seat and a side baffle.

Student's Workbook includes writing-out characters, making phrases, filling in the blanks, re-composing words, making sentences, correcting and guide-writing;