adj. case-hardened
misc. case hardened
控制循环空气的相对湿度和空气的温度可防止表面硬化的出现。
It is prevented by controlling the relative humidity of the circulating air and the temperature of the air.
表面硬化：表面硬化的紧固件是黑色金属，其表面经过处理后比内心硬度要高。
Case hardened: a case hardened fastener is a fastener of ferrous material having a surface which has been made harder than the core.
CDS生产公司的台式分类器是一款标准的台式滚动分类系统，设备包括12“表面硬化的不锈钢滚筒，可调节滚筒高度和角度。”
CDS Manufacturing builds table top roll sorters. Standard table top roll sorter system includes a pair of 12 "case hardened stainless steel rollers, adjustable roller height and Angle."
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