hvackkw (25)in #dtube • 7 years agoWhy Dtube? (personal advertisement)Our contents aren't for free(KOR VER) If this get many likes, I will transfer it to english version. Cheers!! ▶️ DTube ▶️ IPFShvackkw (25)in #temperature • 7 years agoInstant Thermodynamic and Refrigerating 1 : What is Temperature?(KOR)ㅁ ▶️ DTube ▶️ IPFS