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丁二醇
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丁二醇
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丁二醇
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丁二醇
二元醇。有1,2-丁二醇、1,3-丁二醇、1,4-丁二醇、2,3-丁二醇、异丁二醇(2-甲基-1,2-丙二醇)5种同分异构体。
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fire damper in smoke-venting system
fired brick
fire demand
fire detection
fire detection system
fire detection technology
fire detector
fire detonator initiation
fire disaster of grassland
fire disturbance
fire door set
fire dragon
fire dynamics
fire effects on the stage
fire elevator
fire emergency broadcast system
fire emergency lighting and evacuating system
fire emergency lighting device
fire emergency rescue
fire endurance of building member
fire engines
fire equipment
fire evacuation
fire evidence collection
fire extinguisher
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