وحدات القياس (6) الكلفن وحدة قياس درجة الحرارة 中國

Credit: NIST @https://www.nist.gov/ --------------------------------------------------------------------------------------- :المصادر https://www.nist.gov/si-redefinition/kelvin-introduction https://iopscience.iop.org/article/10.1088/1681-7575/aa7b3f https://en.wikipedia.org/wiki/Thermodynamic_temperature -----------------------------------------------------------------------------------------

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