noise limit

Approach for deducting the background value of boundary noise;

厂界噪声背景值修正问题的讨论

The problems happed in monitoring factory boundary noise are discussed.

通过一些噪声监测实例来探讨有关工业企业厂界噪声测量中的有关问题,并提出了相应的改进方法和建议。

this article analysed the reason that exceed standard of boundary noise.

分析了某电厂厂界噪声超标的原因,根据噪声源的噪声特性,提出了厂界噪声综合治理方案,对隔声墙进行了设计,并对效果进行了计算和预测。

Numerical methods for the chaotic motion of duffing oscillator uuder parametric excitation of bounded noise;

有界噪声参激下Duffing振子混沌运动的数值方法

The possibility for onset of chaotic motion in the Duffing oscillator under parametricexcitation of bounded noise is studied The stochastic Melnikov process is first derived and thecritical value of excitation amplitude for the onset of chaotic motion is obtained based on thestochastic Melnikov process having simple zero in the mean square sense.

本文研究有界噪声参激下Ｄｕｆｆｉｇ振子出现混沌运动的可能性。

To demonstrate the robustness against the effective of bounded noise of the proposed control st.

通过研究有界噪声作用下该系统的控制效果,表明了该方法具有较强的鲁棒性和抗干扰能力。

Conceivability of Adding LAE and LNP into Assessment of Noise from Constructoin Site

关于建筑施工场界噪声评价参数中增加LAE和LNP的设想

Article 43 Noise level at the boundary of newly-constructed profit- making cultural and entertainment centers must be kept within the limits of environmental noise emission set by the State.

第四十三条 新建营业性文化娱乐场所的边界噪声必须符合国家规定的环境噪声排放标准；

Noise Measurement and Reduction of Motorcycle Abroad

世界各国摩托车的噪声测试方法及降噪措施(1)

Acoustics--Guidelines for the design of low-noise workplaces--Noise control strategies

GB/T17249.1-1998声学低噪声工作场所设计指南噪声控制规划

Ambient noise may come from any direction.

外界噪声可以来自任意方向。

The Change of Acoustic Stapedius Reflex Amplitude with the Stimulation of the Wide Band Noise in Sound Field

声场下噪声刺激对镫骨肌声反射幅值的影响

Measuring and Its Correction of Background Noise in Industrial Enterprises Noise at Boundary

工业企业厂界环境噪声监测中背景噪声监测及修正探讨

distributed emission crossed-field noise-generator

分布发射式正交场噪声发生器

Standard of aircraft noise for environment around airport

GB9660-1988机场周围飞机噪声环境标准

Measurement of aircraft noise around airport

GB/T9661-1988机场周围飞机噪声测量方法

injected-beam crossed-field noise generator

注入式正交场噪声发生器

SOUND FIELD STRUCTURE AND MEASUREMENTS OF SHIP SELF-NOISE

舰船自噪声场结构及其实验研究方法

Studies on Robust Matched Field Inversion and Noise Suppression;

稳健匹配场反演与噪声抑制技术研究

Studies on the Methodology and Influence Factors of Airport Aircraft Noise Prediction;

机场航空噪声预测及其影响因素研究

Comprehensive Treatment on the Oil Fields Fix Locale of Active Noise

油田固定作业场所有源噪声综合治理

Design and application of assessable model for the noise in workplace

工作场所噪声评价模板的设计与应用

Study on the Surface Noise Prediction for Aircraft Cruise

飞机巡航近场噪声经验预测方法研究

Application of Q2406B in Noise-data Transmission System of Aerodrome

Q2406B在机场噪声数据传输系统中的应用