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Theoretical analysis and calculation on the acoustic properties of perforated panel absorber were described herein.

文章对穿孔板背面紧贴吸声薄层时的声学特性进行了理论分析与计算，并与实验结果作出比较。

And the acoustic pressure phase sensitivity frequency response properties are investigated in terms of theories, simulations and experiments.

实验结果验证了小尺度结(来源：ABCb5论5d文网www.abclunwen.com)构下水声低通滤波理论及模型的正确性。

The surface acoustic wave can disperse when the material properties of near-surface change.

材料近表面性质的变化能够导致在其中传播的声表面波发生色散。

These services are beneficial because you can search properties across the country, which is great for investors.

这些服务是有益的，因为你可以搜索属性全国，这是伟大的投资者。

Effects of three feeding methods on siloxane modified acrylate emulsion polymerization stability and properties of emulsion were studied.

研究了3种单体投入方式对有机硅改性丙烯酸酯乳液聚合稳定性及性能的影响。

It is very important to establish an approach to determine the typos and contents of acrylate in polymer because of their greater effects on paint properties.

由于聚合物中丙烯酸酯的类型及含量对涂料的性能有着十分重要的影响，因而建立一个快速易行、准确可靠的方法来测定聚合物中丙烯酸酯及其含量是非常重要的。

The effect of the substrate on the surface properties of organosilicon polymer and acrylate polymer blend films was investigated.

研究了成膜基材对有机硅聚合物－聚甲基丙烯酸甲酯溶液共混物薄膜表面性能的影响。

So modified by polysilicone , acrylate resins properties can be improved.

因此利用有机硅改性，可大大改善丙烯酸树脂的性能。

The effect of acrylonitrile content on the properties of the copolymer was studied.

考察了丙烯腈含量对其共聚物性能的影响。

Based on physical properties, mineral composition, chemical components and infrared spectra, the main mineral components of "Kunjiu Jade" and "California Jade" are proved to be tremolite and actinolite respectively. Both Jades belong to nephrite in gem classification and ultrabasic rock in mineral deposit classification.

根据加里福尼亚州的"加州玉"和缅甸"困就"的物理性质，矿物组成、化学成分及红外光谱特徵，确定"困就"的主要矿物成分是透闪石，"加州玉"的主要矿物成分为阳起石，两者的宝石名称是软玉。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。