The influences of the species and added amount of water-resistance agents on the properties of coated high absorptive base paper with low basis weight were investigated.
研究了涂料体系中抗水剂的种类和用量对低定量、高吸收性原纸涂布后主要性能的影响。
The reverberation time and noise level of tunnel-typed public works can be reduced by adding large amount of acoustical structure with high absorptive coefficient.
隧道型公共设施的声环境，可以使用大量具有高吸声系数的吸声构造，铺设于隧道拱壁及轨道铺面，以降低混响时间及噪声。
The reverberation time and noise level of tunnel-typed public works can be reduced by adding large amount of acoustical structure with high absorptive coefficient.
隧道型公共设施的声环境，可以使用大量具有高吸声系数的吸声构造，铺设于隧道拱壁及轨道铺面，以降低混响时间及噪声。
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