基本解释慢速裂纹扩展专业释义化学慢速裂纹扩展However Slow Crack Growth (SCG) is recognized as one of the major concerns for polyethylene pipes.慢速裂纹扩展(SCG)被认为是造成聚乙烯管道失效,影响管道寿命最重要的隐患之一。