China's F 1 car breaks cover : note KERS battery box and clever chromed rear diffuser.
中国最多的车探秘: 注意KERS的电池盒和巧妙的尾部扩散器.
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Five recovery methods of chromium from chromed residues are stated in this paper.
本文概述了国内外目前从含铬下脚料中回收铬的方法:碱法、酸法、氧化法、焚烧法.
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Hard - chromed piston rod with micro - grooves , increasing the rigidity and reducing friction, keep better lubrication action.
活塞杆微裂纹镀硬铬, 增因硬度减少磨擦, 保持油膜润滑效果值.
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