This paper introduces the principle and tested results of measuring nodulizing grade by audio frequency method.

介绍了音频法检测铸件球化级别的原理及试验结果。

youdao

This paper introduces the principle and tested results of measuring nodulizing grade by audio frequency method.

介绍了音频法检测铸件球化级别的原理及试验结果。

youdao