统一办理
The results showed that the existence of dark-yellow stains in stainless tube after acid cleaning results from the contamination of chalks, the non-uniformity of chromium in raw material and the slow cooling rate in solid solution treatment.
结果表明:粉笔污染、原材料中铬含量的不足以及固溶处理中冷速较慢均会导致不锈钢焊管经酸洗后表面出现暗黄色花斑。
The distributing uniformity of water distribution system is one of key factors affecting UBF reactor treatment.
布水系统布水的均匀性对UBF反应器处理能力至关重要。
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