Flexible core assembly
作者： Charles R Baker , Ralph W Snowden , Forrest W Streeter
DOI:
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摘要:
lens.org 参考文章(5)
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Louis H Morin, Die and core structures for producing molded spool bodies ,(1953)
Falih N Darmara, Harry J Hamjian, Means for making die inserts ,(1953)