The fundamental of blackening process as well as its formula, procedure and trouble-shooting cases was described in detail.
详细介绍了钢铁常温发黑的原理、配方、工艺过程及常见故障的排除。
The fundamental of blackening process as well as its formula, procedure and trouble-shooting cases was described in detail.
详细介绍了钢铁常温发黑的原理、配方、工艺过程及常见故障的排除。
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