三价铬电镀方法的研究（上） 关键词：三价铬； 电镀； 硬铬； X-射线 [gap=648]Keywords：trivalent chromium； plating；hard chromium； X-ray
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hard chromium plating 电镀 ; 硬铬 ; 横杆式变速
hard chromium plated tool 硬质镀铬工具
Hard chromium like pear's skin 梨底硬铬
Can be hard chromium plated 可进行电蚀加工
hard chromium layer 硬铬镀层
However, in some small engines, the cylinder walls are plated with chromium, a very hard metal, to reduce wall wear and lengthen their life.
而对于一些小型发动机，气缸壁面镀铬，铬是一种硬度非常高的金属，可减少气缸壁的磨损并延长使用寿命。
Can cut very hard line energy type, for example, diagonal cutting pliers should consists of 0.8% carbon and certain components made of chromium and vanadium.
例如，能剪切极硬线的省力型斜口钳应该由0.8%碳和一定成分的铬和钒制成。
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