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国外某公司提出了低碳钢零件快速渗透过程,时间为30分钟,钢制螺钉(AE1038—C)为12.7×76.2毫米,上面涂一层氮化碳(NITROCARB)然后放
A foreign company made the rapid infiltration of low-carbon steel parts for 30 minutes, steel screws (AE1038-C) of 12.7 × 76.2 mm, coated with a layer of carbon nitride (NITROCARB) and then put