Control of web elongation

作者: Charles H Angell

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参考文章(9)
Wohlrabe Otto, Web feeding device ,(1933)
Sten E Bartelson, Instantaneous film motion filter ,(1951)
Corlett Robert C, Registration control device ,(1950)
Herbert A Bendfelt, Film tensioning apparatus ,(1946)
Richard J Alhand, Automatic control system ,(1955)