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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It has Burr-Brown 2 Channel low-noise Op Amp, ELNA Audio Grade Capacitor and a R-core linear power supply - doesn't mean that much too you?

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From the SEVEN Series, the Z SEVEN will be the first gaming headset available for gamers in need of a tournament grade audio that can also deliver an extraordinary experience with movies and music.

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The kit includes a 2-meter automotive grade HDMI cable, which handles all audio and video transfer between the Pioneer products and iPhone 5, and a 1.5-meter 17-pin to USB cable for charging iPhone 5.

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