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https://ecbt.kr/cert/engineer-chemical-industry/concept/thermodynamic-state-functions 2026-11-04T11:08:52+00:00 weekly 0.7 https://ecbt.kr/cert/engineer-chemical-industry/concept/transfer-functions-and-block-diagrams 2026-11-04T11:08:52+00:00 weekly 0.7 https://ecbt.kr/cert/engineer-chemical-industry/concept/transient-response-analysis 2026-11-04T11:08:52+00:00 weekly 0.7 https://ecbt.kr/cert/engineer-chemical-industry/concept/turbine-working-principles 2026-11-04T11:08:52+00:00 weekly 0.7 https://ecbt.kr/cert/engineer-chemical-industry/concept/twophase-systems 2026-11-04T11:08:52+00:00 weekly 0.7 https://ecbt.kr/cert/engineer-chemical-industry/concept/unit-reaction-processes 2026-11-04T11:08:52+00:00 weekly 0.7 https://ecbt.kr/cert/engineer-chemical-industry/concept/vapor-liquid-equilibrium 2026-11-04T11:08:52+00:00 weekly 0.7 https://ecbt.kr/cert/engineer-chemical-industry/concept/vapor-liquid-liquid-equilibrium-conditions 2026-11-04T11:08:52+00:00 weekly 0.7 https://ecbt.kr/cert/engineer-chemical-industry/concept/vapor-pressure-concepts 2026-11-04T11:08:52+00:00 weekly 0.7