1. Measuring range of teaching instrument: 40dB～130dB.2, resolution: 0.1 dB.3. Measurement error: 　

Introduction of multimedia teaching equipment：Multimedia teaching means that in the teaching proces　

With the progress of society and the opening up of Chinese education, school classrooms have also be　

Teaching equipment is a kind of teaching equipment with teaching characteristics and reflecting teac　

Zhongqi Education Equipment summarizes the six steps for cleaning the test bench, as follows:Firstly