A novel process of ambient temperature parkerizing and blackening for ferrous metals was studied, as also the effect of factors on the finishing quality.
英
美
释义
提出了一种新型黑色金属常温磷化发黑工艺,研究了影响膜层质量的各种因素。
把海词放在桌面上,查词最方便
触屏版
|
电脑版
©2003 - 2024 海词词典(Dict.cn)
立即下载