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07:11 ECH 145A Lab 2 Gas Cylinder Safety ECH 145A Lab 2 Gas Cylinder Safety	ECH 145A Lab 2 Gas Cylinder Safety gas pressure valve regulator reason cylinder shut oxygen psi thousands air beliefs argon quantities dioxide carbon installation steps hissing hazard From Jiandi Wan 0 likes 242 plays 0
08:12 ECH 145A Lab 2 Part 2 ECH 145A Lab 2 Part 2	ECH 145A Lab 2 Part 2 air argon step things response error times dioxide carbon weights plunger couple bit function oscillations ruler force pressure ratio analysis From Jiandi Wan 0 likes 420 plays 0