The system consisting of optical fiber displacement sensor and solid linear expansion coefficient apparatus, is used to measure the linear expansion coefficient of metal.
将反射式光纤位移传感器应用于固体线膨胀系数测定仪，可以较精确地测定金属线胀系数。
The difference of the value of the real thermal expansion coefficient and the average thermal expansion coefficient, and the difference of thermal expansion among the given steel grades were analyzed.
分析了瞬时线膨胀系数与平均线膨胀系数的差异以及不同钢种间热膨胀的差异性。
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