J4 ›› 2012, Vol. 11 ›› Issue (4): 28-31.
介绍利用杠杆原理、干涉原理或螺旋测微原理测量线胀系数的几种方法及测量精度。实际测量中，可以根据测量精度要求以及现有实验仪器，选择适当的测量方法。
This paper presents several methods measuring linear expansion coefficient and micrometer through the use of leverage,interference principle or spiral interferometry measurement principle. We can select appropriate method according to experimental equipment and measuring accuracy.
