最新色国产精品精品视频,中文字幕日韩一区二区不卡,亚洲有码转帖,夜夜躁日日躁狠狠久久av,中国凸偷窥xxxx自由视频

Cu and Ni films coated on one or both sides of stainless steel substrates were produced by brush plating and electroplating techniques, respectively. The elastic moduli of Cu and Ni films with various thickness on substrates were determined using three-point bending tests. The results showed that the elastic moduli of Cu and Ni films were almost independence of film thickness and approximately the same as those of corresponding bulk materials.