This is a great method if you're simply testing your protection from external threats.
如果正简单测试对外部威胁的保护，这是一个很棒的方法。
To carry out cathodic protection routine testing, monitoring and maintenance work.
负责阴极保护日常检测、监测和维护工作。
To carry out cathodic protection routine testing, monitoring and maintenance work.
负责阴极保护日常检测、监测和维护工作。
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