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热力学第一定律
rèlìxué dìyī dìnglǜ
railw.
the first law of thermodynamics
refrig.
equivalence principle
;
first principle of thermodynamics
wind.
first law of thermodynamics
【物】热力学第一定律
rèlìxué dìyī dìnglǜ
avia.
first law of thermodynamics
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