恒温器是以不同的金术有布同蹬膨瘴系数这一事实为根据的。
The thermostat is based on fact that different metals have different coefficients of expansion.
然而，通常热膨服系数高的封接玻璃软化温度低，而热膨胀系数低的软化温度偏高。
The soldering glass has a rather low coefficient of expansion as well as low sealing temperature.
然而，通常热膨服系数高的封接玻璃软化温度低，而热膨胀系数低的软化温度偏高。
The soldering glass has a rather low coefficient of expansion as well as low sealing temperature.
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