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The material appears stratification in ultrasonic detection ,I think the material has quality problems.
您好，您的问题我已经在https://e2echina.ti.com/support/amplifiers/f/amplifiers-forum/208813/lf353mx-nopb 中做回复，如有问题，我在另一个帖子中跟踪，所以先把这个重复的关掉了。
