该文介绍了全息干涉计量法测量材料线膨胀系数的实验原理和实验装置。
This article introduced the experiment theorem and device of calculating the material linear expansive coefficient with the holographic interferometry.
试验结果表明，用应变片法测量材料的线膨胀系数是一种简单可靠且经济实用的替代方法。
The experimental results prove that the strain gauge techniqueforthermal measurement is a reliable and economic alternate method.
详细地探讨了应变片法测量材料线膨胀系数的原理。
The principle of the strain gauge technique for thermal expansion measurement was systematically investigated.
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