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- Its good characteristics include low cost, high durability and good property of sound absorption. 它具有成本低、耐久性高、吸声性能好的特点。
- The result shows that average absorption coefficient and noise reduction coefficient separately equal to 0.58 and 0.60, and fine property of sound absorption at middle-low frequency. 结果表明材料的平均吸声系数和降噪系数分别达0.;58和0
- Acoustics - Measurement of sound absorption properties of road surfaces in situ - Part 1: Extended surface method 声学。施工现场路面对噪声吸收性能的测量。第1部分:扩大表面法
- properties of sound absorption 吸声特性
- The aim was to research the sound absorption properties of graded polyurethanes at different incident angles. 主要研究梯度聚氨酯在全入射角下的吸声性能。
- The emphasis is to study the sound absorption properties of gradient polyurethanes at different temperatures and pressures. 研究了梯度聚氨酯在不同温度和压力下的水声吸声性能。
- This paper mainly studies the sound absorption properties of a new type of multilayered polymer composite materials with nonplanar interfaces at different temperatures and pressures. 主要研究非平面界面的新型多层高分子复合材料在不同温度和压力下的吸声性能。
- The sound absorption property of eucalypt wood of 0.5 cm in thickness is much better than that of 1.0 cm in thickness. 0.;5厘米厚的锯材的吸声性能好于1
- As for acoustical property, the property of SRA is closer to rigid, so the sound absorption coefficient is lower under the same pavement type. 在音学性质方面,SRA因性质偏向刚性,故在相同铺面型式下系其吸音系数较低。
- The sound absorption properties of foamed aluminum are introduced and the effects of thickness, porosity, compression ratio, air cavity depths on sound absorption property are studied. 介绍了泡沫铝的吸声特性,研究了泡沫铝的厚度、孔隙率、压缩率、空腔对其吸声性能的影响。
- He is studying the properties of these particles. 他在研究这些粒子的性质。
- He is studying the medicinal properties of wild plants. 他正在研究野生植物的药物特性。
- Study on the Sound Absorption Property of OSB 定向结构刨花板吸声性能的研究
- Interaction between systems or between properties of a system. 系统间或一个系统的各种特性之间的相互作用。
- the study of the physical properties of sound. 声音的物理性质的研究。
- Each sugar molecule has the properties of sugar. 每个糖分子都具有糖的性质。
- The allergenic has properties of fungal spore. 真菌孢具有诱发过敏反应的性能。
- A Study on the Sound Absorption Property of OSB Wallboard 定向结构板复合墙体吸声性能的研究
- The allergenic properties of fungal spore . 真菌孢具有诱发过敏反应的性能。