Surfaces to be welded or thermally cut shall be cleaned of all foreign material such as grease, oil, dirt, scale, slag and paint that would be detrimental to either the weld or base material.
需焊接或热切割的表面应排除所有可能会损坏焊材或母材的杂物，如脂、油、灰尘、水垢、熔渣和油漆等。
Base on the algorithm research, I have compiled a PLC program to realize the automatic tuning of the control parameter in the Nuclear-Scale material proportioning system.
在算法研究的基础上，基于PLC系统实现了核子秤配料系统的参数在线自动整定。
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