coordinate paper,graph paper,millimeter paper, profile paper, scale paper, secti

Keep abreast of root canal files with the help of taper coordinate;

运用锥度坐标纸重识根管预备器械锥度

It could be used to make the trigonal squared paper and plot the three componential phase graph,etc.

本文详细研究了目前国内应用Origin软件进行实验数据处理方面的进展情况,又研究了曲线拟合后,作某点切线和求该点切线斜率的方法、三角坐标纸的制作及三组分相图的绘制等新的应用。