In this paper, we discuss the nature of half-wave loss about mechanical wave, electromagnetic wave and matter wave respectively.

本文分别讨论了机械波、电磁波、物质波在两种介质的分界面正入射传播时产生半波损失的本质。

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In the process of spinning spun yarn, the improvement of yarn quality depends on proper rubber-covered roll, roller without mechanical wave, new type under-pin and ring.

在细纱工序中，采用合适硬度的胶辊、无机械波罗拉、新型下销与钢领，能快速、全面提高成纱质量。

youdao

In the process of spinning spun yarn, the improvement of yarn quality depends on proper rubber-covered roll, roller without mechanical wave, new type under-pin and ring.

在细纱工序中，采用合适硬度的胶辊、无机械波罗拉、新型下销与钢领，能快速、全面提高成纱质量。

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