首先介绍了国内外的几种微波衰减材料，同时分析了我所正在使用和研究的几种衰减瓷；
Several microwave attenuating materials used in MWTs were introduced and their properties were described in detail.
帕金斯不健全的工作衰减材料，例如，复合材料的评价能力，以减少共振的部件，如前端覆盖。
Perkins does work on sound attenuation materials, for example, laminate materials are evaluated for their ability to reduce resonance of components such as front end covers.
然而，专家说，在某些应用条件下，纳米材料反而不利，或是会在几十次充放电后发生衰减。
Still, in some applications, nano-materials gum up the works, or break down after a few dozen charges and discharges, experts say.
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