Results:The tumors showed as a thickness or bulky mass of the local supraglottic structure with irregular margin, homogeneous attenuation and slight enhancement.
结果：肿瘤呈局部软组织增厚或团块状肿块，形态不规则，密度较均匀，增强后轻度强化；
Furthermore, with the method of amplitude ratio with different frequency selected, the areal attenuation effect and local site response have been studied.
采用振幅谱频率比方法，研究区域衰减效应和局部场地响应。
The whole-spacecraft vibration isolation technology and the spacecraft local vibration attenuation can improve the dynamic environment of the spacecraft.
卫星在发射过程中的振动环境比其在轨运行时更为恶劣，整星隔振和卫星局部减振可以使卫星的动力学环境得到改善。
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