4Mahmoud Omid,Mahmoud Soltani,Mohammad Hadi Dehrouyeh,Seyed Saeid Mohtasebi,Hojat Ahmadi.An expert egg grading system based on machine vision and artificial intelligence techniques[J]. Journal of Food Engineering . 2013 (1)
5Bin Yu,Anil K. Jain.A robust and fast skew detection algorithm for generic documents[J]. Pattern Recognition . 1996 (10)
6S Miller,M Svrcek,K-Y Teh,C Edwards.Assessing the feasibility of increasing engine efficiency through extreme compression. International Journal of Engine Research . 2011
7Ishikawa Y,Iwama H,Naito Y,et al.Combination of cylinder liner and piston ring of internal combustion engine. US,6553957 . 2003
8Huggins,Jr.Piston ring end gap tool. US,5038449 . 1991