假设温度恒定时，由波长的偏移量就可得出应变的变化。
Assume the temperature to be constant, the strain can be gotten measuring wavelength drift.
例如，假设有一种环境传感器能够感觉环境温度。
For example, say there is an environmental sensor that senses the current temperature.
假设我们把起初具有不同温度的两个物体放在一起。
Suppose that we bring together two blocks that initially have different temperatures.
假设我们把起初具有不同温度的两个物体放在一起。
Suppose that we bring together two blocks that initially have different temperatures.
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