Based on statistic to structural parameters of current crushing cavity in back impact crusher, the paper concludes select range of structural parameter of crushing cavity and puts forward the suggestion to improve the shape of cavity by analysis and comparison. 在统计已有反击式破碎机破碎腔结构参数的基础上,经过分析比较总结出破碎腔结构参数的选择范围,并提出对已有腔形改进的建议。
The results validate that the material with cavity at its back can effectively increase the sound absorption properties of materials. 结果验证了材料背后留有空腔,能有效地提高材料的吸声性能。
The absorbing structure made of an aluminum fiberboard and a cavity on its back has clear resonance absorption characteristics. 铝纤维板与背后空腔组成的吸声结构具有明显的共振吸声特性。
Turbulent Mixed Convection in a Two-dimensional Opening Rectangle Cavity with Heated Back Wall 后壁受热二维矩形开口空腔中的紊流混合对流
To meet the requirements of miniaturization, high gain and wideband of UHF antenna for aircraft SAR, the gain loss produced by narrowing back cavity of short back radiation antenna is analyzed. 针对超高频机载合成孔径雷达天线小型化、高增益和宽频带的问题,分析了短背射天线缩小背腔的增益损失。