In this paper an equivalent sound barrier model is proposed and its A-weighted sound insertion loss under different traffic volumes is computed.
提出了等效声屏障模型，计算其不同车流量下的Ａ计权声插入损失；采用虚声源法预测双层高架复合道路（即典型的高架复合道路）两侧的声场分布，得出这一复杂声场的特点，结果表明，地面道路噪声对上半空间声场的影响大于上层道路噪声对下半空间声场的影响，从而指出，必须对高架上层和地面采取包括声屏障在内的综合防治措施，才能收到良好效果。
The study of active noise barrier is in the initial stage.
有源声屏障尚处于初始阶段，许多基本问题尚未得到解决，本文用数值模拟的手段分析了有源声屏障的有源控制效果与次级声源的个数、观测点的位置以及噪声频率等因素的关系；通过分析屏障上边缘声场分布特征，对有源控制作用机理作出了定性的解释。
Effect of Electroacupuncture on the Permeability of Blood-Brain Barrier for Nerve Growth Factor and Its Relevance to PKC Pathway in Cerebral Ischemia Rats
电针诱导神经生长因子透血脑屏障效应及其机制分析
Effects of thickness and slope of the coarse layer cover of radioactive waste disposal site on its capillary barrier function
粗石英砂层厚度及倾角对核废物处置库顶盖毛细屏障效应的影响
Study on Practical Technology and Application Achievement of Sound Barrier for New Type Road
新型道路声屏障实用技术及应用效果研究
Leap over the steel barrier--Influences of American steel protecting policy and its chain reactions and the analysis of the countermeasures to the policy
跨越钢铁屏障——美国钢保措施及其连锁效应的影响与对策分析
Acute Cold Exposure on the Permeability of the Blood-brain Barrier in Rats and the Protective Effects of Luteolin
急性冷暴露对大鼠血脑屏障通透性的影响及木樨草素的防护效应
Clinical Management of Effect of Apical Barrier with Mineral Trioxide Aggregate(MTA)
三氧化物多聚体应用于根尖屏障的临床疗效评价
The design and application of management and protecting barrier to ensure patient safety
患者安全护理管理屏障及实体防护屏障的设计及应用
Application of Barriers in Safety Management of High-alert Medications
安全屏障应用于高危药物管理的研究
The oil reservoir shall act as a barrier to trap moisture and provide sufficient time for a planned shutdown in the event of an outer seal failure.
贮油器应该在外部密封失效、设备关闭的一段时间内具有防潮屏障的功能。
The Effects of the Clinical Efficacy of Method of Strengthing Spleen and Enriching Blood Eliminating Wind in Treatment of Chronic Atopic Dermatitis
健脾养血祛风法治疗特应性皮炎临床疗效及对皮肤屏障功能的影响
Intact human skin function is a highly efficient barrier to the evaporative loss of water and heat.
完整的皮肤是水和热的蒸发性丧失的高效屏障。
Research on the Noise Reduction Effect of Railway Noise Barrier in the Section from K456+370 to K457+900 of Neijiang-Kunming Railway;
内昆线K456+370—K457+900段声屏障降噪效果研究
Design of Novel Noise Barrier for Highways and Study on the Effect Test;
新型公路声屏障的设计及效果测试研究
Study on the Effect Test and Mechanism of Aluminum Foam Noise Barrier
泡沫铝声屏障降噪效果测试与机理研究
Analysis of Noise Reduction Efficiencies of Straight-type and Incline-type Absorbing Sound Barriers Along Railway
铁路直立型与内倾型吸声声屏障降噪效果分析
Comparison of Noise Reduction Effects for Different Inclinations of Sound Barrier
不同倾斜角度声屏障降噪效果对比研究
Construction and Noise-reduction Effect of Road Sound Barrier in Shanghai Outer Circular Highway
上海外环线道路声屏障的施工及降噪效果
Influence of geometry shapes of sound barrier on noise reduction effect in high speed railway
高速铁路声屏障几何形状对降噪效果的影响
