Alternative magnetic leakage flux method was developed from the eddy current testing and traditional magnetic leakage flux testing, and it was advantageous for surface flaw recognition.

交变漏磁检测方法由于兼具涡流检测和传统漏磁检测的特点，对表面缺陷具有很高的识别率。

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Presenting the advantages and disadvantages of each method, it introduces in vitro alternative testing such as cellular methods for acute systemic toxicity, target organ, and local toxicity.

提出每种方法的利弊，介绍在试管内替换测验象细胞方法那样适合厉害的系统的毒性，目标器官和地方的毒性。

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A new Nondestructive testing method, alternative current magnetic flux leakage testing, was introduced to inspect the flaw in the drilling tool thread area.

采用交流磁场检测法对钻具螺纹进行了探伤。

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