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出典:Wikipedia
出典:『Wikipedia』 (2010/11/04 15:37 UTC 版)
A drag reducing agent, also called a flow improver, is a long chain polymer chemical that is used in crude oil, refined products or non-potable water pipelines. It is injected in small amounts (parts per million) and is used to reduce the frictional pressure drop along the pipeline's length.
Drag reducing agent