Abstract: The concept of endoscopic ultrasound (EUS) has been introduced to nondestructive testing (NDT) for the inspection of tubular structure. However, the fixed normal focusing beam of the present ...

局部放电是电力设备绝缘劣化的征兆和表现形式，又是绝缘进一步劣化的原因。由于绝缘击穿的后果经常比较严重，因而对电力设备进行局部放电检测显的尤为重要。电气设备的局部放电属于不会使电极短接的电气放电。这种放电幅值通常较小，但它们却可以使 ...

Abstract: Difference-frequency-based ultrasound imaging has emerged as a promising new modality in medical imaging, allowing for high-contrast elastographic imaging to diagnose conditions such as ...

Active monitor speakers were at one point the near-exclusive haunt of the audio professional, casual listeners leaning more to desktop computer speakers or to hi-fis of their own design. A recent ...