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。

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The new design of cooling holes to avoid dust falling from the top, the thickness of thin towards the design, audio-grade plastic to make our products more texture!

全新的散热孔设计避免了灰尘从上方掉落，厚度也朝向薄形设计，音响级的塑胶材质使产品更富质感！

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The luxury-decorated boxes are made to provide you with entertainment-grade audio equipment, you can enjoy wonderful program and intoxicating atmosphere of in the entertainment bar.

包厢装修豪华、时尚，为您提供演艺级的音响设备，演艺吧为您献上精彩的节目，让您在醉人的气氛中尽享激情。

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The luxury-decorated boxes are made to provide you with entertainment-grade audio equipment, you can enjoy wonderful program and intoxicating atmosphere of in the entertainment bar.

包厢装修豪华、时尚，为您提供演艺级的音响设备，演艺吧为您献上精彩的节目，让您在醉人的气氛中尽享激情。

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