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HYFI (Hydraulic Feedack Imitator)
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This is the original index card for the keyword "HYFI (Hydraulic Feedack Imitator)".


design 7129 equations 7131 pair of 7134
This image is reproduced courtesy of The Estate of W. Ross Ashby. Copyright 1972, 2008 © The Estate of W. Ross Ashby
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