排放量流量、流速，或排出量，排出的速度 The amount or rate of emission or ejection.
排气道，通气管向外排放物质的洞；通风孔 An opening for outward discharge; a vent.
污染造成污染的行为或过程或被污染的状态，尤指因为排放有害物质而造成的对土壤、水或大气的污染 The act or process of polluting or the state of being polluted, especially the contamination of soil, water, or the atmosphere by the discharge of harmful substances.
