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单词 surface oil-film technique
释义 surface oil-film technique
[¦sǝr·fǝs `ȯil ´film ´tek´nēk]
FLUID MECHANICS
A method of flow visualization in which a solid surface is coated with a mixture of oil and powdered pigment, and the airstream carries the oil away, leaving a streaky deposit of pigment that provides information on airflow.
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