1) Climatic noise
气候噪声
1.
Climatic noise and potential predictability of monthly mean temperature have been studied based on the data at 74 stations selected over China from 1960 t0 1991.
利用中国74个测站1960～1991年日平均温度研究了中国月平均温度的气候噪声和潜在可预报性。
2.
Based on the daily precipitation data of 130 stations selected over China from 1961 to 2004,the variance due to climatic noise and potential predictability of seasonal precipitation over China are estimated in terms of low frequency white noise extension method and the analysis of variance.
利用中国130个测站1961—2004年的日降水量资料,使用低频白噪声延伸法和方差分析法估计了中国季降水量的气候噪声方差和潜在可预报性。
2) aerodynamic noise
气动噪声
1.
Prediction of interior aerodynamic noise of high-speed train cab;
高速列车司机室内气动噪声预测
2.
Numerical analysis of aerodynamic noise in a cross flow fan;
贯流风机气动噪声数值预估
3.
Numerical prediction of aerodynamic noise radiated from high speed train head surface;
高速列车车头曲面气动噪声的数值预测
3) Exhaust noise
排气噪声
1.
Testing research on muffler for filtering period interval exhaust noise;
周期间隙性排气噪声滤波消声器的试验研究
2.
According to the frequency chart performance of the exhaust noise,the new muffler of one 100 kW diesel genset is designed.
以某100 kW发电机组用柴油机在100%负荷时消声器进口处噪声的实测数据为条件,根据进口处排气噪声的频谱特性,对该柴油机的消声器进行了重新设计,并通过三维声场计算的方法对其在125~4000 Hz倍频程及315 Hz共七个频率进行计算。
3.
According to the exhaust noise characteristics of special engine and the installation request of exhaust muffler, the exhaust muffler for special engine was designed.
根据特种发动机排气噪声的特性和消声器的安装要求,设计了一个组合式排气消声器。
4) aeroacoustic noise
气动噪声
1.
The aeroacoustic noise derived from the pressure fluctuation of blades and volute throat is predicted by the FW-H equation based on the Lighthill noise analogy.
基于N-S方程和雷诺输运应力方程(RSM),对空调用贯流风机进行了非稳态内流计算,并应用基于L ighth ill声学类比理论的FW-H方程时域解法,预测了由叶轮表面压力波动和蜗舌表面压力波动所产生的远场气动噪声,同时还比较了不同蜗舌间隙对气动噪声的影响。
2.
Chaos characteristics of the aerodynamic noise are discussed and the aeroacoustic noise signals on helicopter scissors tail rotor is analyzed by the chaos theory.
研究剪刀式尾桨气动噪声的混沌特性,并应用混沌理论进行了直升机尾桨气动噪声信号分析。
3.
Research of helicopter rotor aeroacoustic noise based on CFD technics
应用CFD技术和气动声学的时域理论,研究直升机旋翼悬停流场及气动噪声。
5) Aeroacoustics
[,ɛərəuə'ku:stiks]
气动噪声
1.
In order to study the aeroacoustics of an industrial centrifugal fan with non-isometric forward-swept blade impeller,two new impellers with different blade spacing were designed for T9-19 No.
为探索不等距布置叶轮叶片对工业离心风机气动噪声的影响,以T9-19No。
2.
The results show that the aeroacoustics is dominated by tones at blade passage frequency and the higher harmonics in a centrifual impeller with vaned deffuser.
利用计算所得流场结果并结合Lighthill和Lowson声学方程计算了由叶片表面非定常脉动力产生的气动噪声。
3.
Aerodynamic optimization,fluid/structure interaction and aeroacoustics et al have now become main research directions.
目前,气动外形优化设计、气动/结构耦合干扰、气动噪声等多学科问题成为空气动力学的研究热点,该文介绍作者的团队近年来在计算气动弹性研究方面的若干进展,作为对郭永怀先生诞辰100周年的怀念。
6) atmospheric noise
大气噪声
1.
Major source of noise to the reception of the very-low-frequency signals is the atmospheric noise,and it is the non-Gaussian nature of noise.
甚低频通信中,大气噪声作为通信系统的主要噪声干扰源,严重影响甚低频通信系统的性能。
2.
The very low frequency/low frequency communication systems are greatly influenced by atmospheric noise,which is very difficult to be analyzed because of many uncertain factors and the limitation of observational result.
大气噪声严重影响甚低频/低频通信系统的性能,本身又有多种不确定的因素,观测结果具有局限性,相关的理论分析也比较困难。
3.
Two factors, atmospheric waveguide and atmospheric noise, which have influence to the communication performance are pointed out in this paper.
找出了两种影响通信质量的空间因素———大气波导和大气噪声 ,分析了大气波导对信号场强的影响 ,以及大气噪声对接收机误码性能的影响 ,指出了提高VLF通信质量的方
补充资料：东北平原农业气候资源利用(见农业气候资源利用)
东北平原农业气候资源利用(见农业气候资源利用)
默军爵攫戳猛罚胃植和l用2 iyuanl心yong 见农业气候资
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
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