【摘要】 在概括介绍主要热膨胀位生产厂家产品的基础上，借助典型实例，阐述了当代膨胀仪的基本特征和关于精度与偏差的统计分析结果，比较了几种常用的校准方法，给出了初步结论。更多还原

【Abstract】 On the basis of the general intnduction of the main dilatometer production factories, with the helping of typi-cal cases, describs the fundamental characters of Medern Dilatometer and the statistic analytical result abeut Precision and Bias,by comparing some common calibrated metheds, gives out the inital conclusion.更多还原