助手标题  
全文文献 工具书 数字 学术定义 翻译助手 学术趋势 更多
查询帮助
意见反馈
   性能恶化 的翻译结果: 查询用时:0.06秒
图标索引 在分类学科中查询
所有学科
电信技术
机械工业
更多类别查询

图标索引 历史查询
 

性能恶化
相关语句
  performance deterioration
     Causes and Countermeasures for the Performance Deterioration of Coach Bogies after Speed Increasing
     客车转向架提速后性能恶化原因及对策
短句来源
     A sub-optimal channel estimation algorithm in orthogonal frequency division multiplexing(OFDM) system was proposed,to reduce the complexity of traditional minimum mean square error(MMSE) channel estimator,and to alleviate the performance deterioration of MMSE estimator due to the mismatch of the estimator-to-channel statistics.
     为了降低正交频分复用OFDM(Orthogonal Frequency division Multiplexing)系统中最小均方误差MMSE(Minimum Mean Square Error)信道估计算法的复杂度,并且改善由于信道的统计特性与先验知识不匹配而导致的MMSE估计性能恶化,提出了一种自适应的低秩信道估计算法.
短句来源
     For the CO2 hardened regenerated water glass sand, the main cause of performance deterioration of moulding sand prepared from regenerated sand is owing to the crystal and chips of the residual sodium cabon-ate.
     对CO_2法硬化的水玻璃砂再生砂而言,造成再生砂制备的型砂性能恶化的主要原因是残留碳酸钠盐类的晶体及其碎片.
短句来源
     In this paper,error of quadrature vector detector used in direct converting receiver is analyzed and performance deterioration caused by gain error,phase error,local oscillation leak or DC offset on receiver's inphase and quadrature channels is discussed.
     本文对直接变频接收机中正交矢量检测法进行了误差分析,讨论了由于接收机同相与正交两支路的增益差异、相位误差、本振泄漏及直流偏置导致其性能恶化的结果。
短句来源
     Recently, multiuser detection has developed quickly in order to mitigate the performance deterioration due to multiple access interference (MAI)in CDMA system. However . practicable multiuser detector has not yet been in public.
     近年来,为减轻CDMA系统中多址干扰(MAI)造成的性能恶化,多用户检测技术发展很快。
短句来源
  performance degradation
     TCP(transfer control protocol) performance in OBS(optical burst switching) network was studied,and the performance degradation of TCP tahoe,reno,new reno and sack in the OBS network was discussed.
     对传输控制协议(TCP)在光突发交换(OBS)网络中的性能分析结果表明,OBS组包机制导致TCP的拥塞控制性能恶化,并且Tahoe、Reno、New Reno和Sack 4种TCP模型恶化特性相同.
短句来源
     Ti is added to Cu-Al-Ni alloys cast by heated mold continuous casting process in order to prohibit grain growth during heating,which would cause performance degradation.
     为阻止热型连铸Cu-Al-Ni合金在热加工过程中晶粒长大,导致性能恶化,可在合金中加入Ti细化晶粒.
短句来源
     For the problem of performance degradation of the traditional subspace-based user identification detector (UID) in multipath channels, based on the reconstructed signaling sequence matrix that includes the information of multipath channels, a new subspace-based UID was proposed.
     针对传统的基于子空间方法的用户识别检测器(UID)在多径信道环境下性能恶化的问题,基于重新构造的包含多径信道信息的信息序列矩阵,提出了一种新的基于子空间的UID.
短句来源
     The stability analysis of the Herault Jutten network (H J network) for blind separation is presented in this paper. It is proven that equilibrium points not satisfying a strict independence test can exist in the H J network and these equilibrium points are shown to be the main cause of the performance degradation of the H J network. A previous conclusion is thus amended.
     本文通过对用于盲源分离的Herault Jutten网络 (H J网络 )的稳定性分析 ,证明了H J网络可以有不满足严格的独立性测试的平衡点并指出这些平衡点是H J网络性能恶化的主要原因 ,从而修正并完善了前人的结论
短句来源
     A computation method of error performance degradation for high capacity digital microwave radio communication systems is proposed.
     本文提出一种用于大容量数字微波通信系统误码性能恶化的计算方法——恶化量综合法。
短句来源
更多       
  property deterioration
     There is a tendency that more α phase agglomerates on boundaries in the high- V alloy A than in alloy B. Precipitation and growth of α phase in grain boundaries are the main reasons property deterioration and inter granular cracking.
     高钒含量A合金中的α相比低钒含量B合金中的α相更易聚集于晶界。 晶界α相的析出和长大,是合金性能恶化并发生沿晶断裂的主要原因。
短句来源
     In order to overcome the property deterioration of the controller due to the non-linear and the parameter changing character in the actual control system,this paper puts forward a new kind of control method- the fuzzy controller rectified by RBF neuro-network,and provides the concrete algorithm in detail.
     为了克服实际控制系统中存在的非线性和参数时变性所引起的常规控制器控制性能恶化,提出了一种新的控制方法———基于RBF神经网络整定的模糊控制,并在文中给出了具体算法.
短句来源
  “性能恶化”译为未确定词的双语例句
     The microstructure showed that Ti_3Al was major reason resulting in decreasing the mechanical of Ti/Al_2O_3 composite.
     对Ti/Al_2O_3系复合材料的微观结构分析发现,界面处Ti_3Al相的存在是导致材料性能恶化的主要原因。
短句来源
     Most of all, when doped with 5wt% Li 2CO 3, the dielectric constant of this material is 18120 (1 kHz), which is higher than that of pure 0.9PMN-0.1PFN. When doped with BiFeO3 and MnO 2, on the contrary, the properties were deteriorated.
     其中,当在0.9PMN-0.1PFN中掺入5wt%的Li2CO3时,介电常数为18120,大于纯组分的0.9PMN-0.1PFN的介电常数,当掺入BiFeO3和MnO2时,都使介电性能恶化
短句来源
     How to solve the problem of TCP is one of the main problems facing to ad hoc networks.
     如何解决TCP应用于ad hoc网络时面临的性能恶化是当前亟待解决的问题。
短句来源
     Simulation results show that Doppler frequency shift range from -Rb/2 ~ Rb/2 degrades the bit error rate Pb performance of new quasi - coherent demodulator about 0. 3dB. The Doppler rate can be as large as 4000Hz per second when the bit rate Rb is 9. 6k bits per second.
     仿真结果表明,多普勒频移在-Rb/2~Rb/2范围内变化时,与理论值相比,采用该方法的准相干解调器误比特率Pb 性能恶化仅为0.3dB。 在信息速率Rb=9.6kbps时,多普勒频移速率可达4000Hz/s。
短句来源
     Mn~(2+) solving in electrolyte is an important reason to deteriorate the performance of cathode materials.
     Mn2+在电解液中的溶解是引起LiMn2O4正极材料性能恶化的重要原因。
短句来源
更多       
查询“性能恶化”译词为用户自定义的双语例句

    我想查看译文中含有:的双语例句
例句
为了更好的帮助您理解掌握查询词或其译词在地道英语中的实际用法,我们为您准备了出自英文原文的大量英语例句,供您参考。
  performance deterioration
Performance deterioration of Portland cement matrix due to magnesium sulfate attack
      
The performance deterioration caused by updates to databases or data structures can be overcome by reorganizing the structure from time to time.
      
After showing the experimental results on selective masking, the performance deterioration factors are discussed in detail.
      
The maintenance level of each used machine is chosen for each period in order to economically control performance deterioration.
      
Post hoc analyses showed significant differences among all groups, with positive imagery producing the most improvement, the control condition producing less, and negative imagery resulting in performance deterioration.
      
更多          
  performance degradation
The theoretical analysis and computer simulation disclosed the specific reasons for the performance degradation when SNR estimation was less than the actual value, and for the higher sensitivity of SNR estimation to long-frame Turbo codes.
      
Results from simulations and experiments show that the proposed compiler-directed method can reduce energy consumption of interconnection networks by 20~70%, at a loss of less than 1% network latency and performance degradation.
      
Analysis and simulation results show that the performance degradation is little with proper reduction scheme.
      
By mapping the complex signal space into the real one, the new method can effectively reduce the computation needed by the signal subspace direction finding techniques without any performance degradation.
      
In order to compensate for the performance degradation due to separable processing, two postprocessing schemes are also proposed.
      
更多          
  property deterioration
Bone Biomechanical Property Deterioration Due to Tobacco Smoke Exposure
      
A new method of evaluation of the elastic property deterioration due to accumulated damage is suggested and experimentally verified.
      
A perfect RSR model would require the absence of systematic property deterioration or improvement across the sample.
      


Sludge blockage of blowers is usually one of the main factors worsening the performance of high-supercharged diesel engines. This article deals with the mechanism of sludge block and its precautions. It also introduces some results of experiments in which 18GJ blower has its inlet cleaned with waterjet and takes in air direct ly from the outside of the engine room to prevent the blower from being blocked by sludge.

增压器压气机的污阻往往成为高增压柴油机性能恶化的主要因素之一。文章论述了污阻的机理和防止措施,并且介绍了18GJ增压器采用进口喷水清洗和室外进气防止压气机污阻的某些试验结果。

A general introduction on automotive fuel economy was given, Then a detailed discussion on the effect of carburetor on gas saving was introduced The author pointed out that any simple fuel saving modifications of carburetor may save some fuel on certain operating condition, but cannot save fuel on all conditions, and they always have some adverse effect either on max, power or on max. torque or both of the engine. So any propaganda or advertisement of such saving modifications should be done only after thorough...

A general introduction on automotive fuel economy was given, Then a detailed discussion on the effect of carburetor on gas saving was introduced The author pointed out that any simple fuel saving modifications of carburetor may save some fuel on certain operating condition, but cannot save fuel on all conditions, and they always have some adverse effect either on max, power or on max. torque or both of the engine. So any propaganda or advertisement of such saving modifications should be done only after thorough experimentations.

本文除泛轮汽车节油外,着重讨论化油器和化油器装置对于节油的关系。特别指出简单装用一个节油装置,在某些条件下有某些程度的节油效果,同时也带来一些问题使一些性能恶化。因此,不宜强行推广某些未经鉴定的节油装置

An FNA-coated exhaust valve covered with PSR-1 coating(NiCrBSi)has lasted more than 6000hrs in service. The resistance of PSR-1 to wear and corrosion is due to its multiphase structure with Ni-Cr solid solution and boride and carbide particles of high hardness. In the present paper a study of the phase stability of this coating under corrosion fatigue condition in internal combustion engine is described. The analyses of the coated valves before and after service indicate that the composition of the intermediate...

An FNA-coated exhaust valve covered with PSR-1 coating(NiCrBSi)has lasted more than 6000hrs in service. The resistance of PSR-1 to wear and corrosion is due to its multiphase structure with Ni-Cr solid solution and boride and carbide particles of high hardness. In the present paper a study of the phase stability of this coating under corrosion fatigue condition in internal combustion engine is described. The analyses of the coated valves before and after service indicate that the composition of the intermediate layer-between coating and base material has changed from a solid solution rich in Ni to one rich in Feo It is found that, the diffusion of Fe results in transformation of chromium boride to iron chromium boride. The superior properties and longer life of the coated valves can be ascribed to the lower diffusion rate of Fe at the service temperature of about 600℃. The redistrubution of Cr in the coating alloy depends on the diffusion of Fe as well. The diffusion of boron has not induced deterioration of mechanical properties. In conclusion, the PSR-1 coating is Sa.tisfactory as to the phase stability after more than 6000hrs service

加涂PSR-1(NiCrBSi系)的FNA涂层气阀在生产上使用已超过6000小时,PSR-1合金是一由Ni—Cr固溶体和高硬度的硼,碳化物质点组成的多相结构,具有很好的耐磨耐蚀性。本文着重研究了该涂层合金在内燃机的燃气腐蚀疲劳工作条件下的演变规律,经对使用前后的涂层气阀分析解剖表明:涂层与基体之间的互溶区由富Ni固溶体转变成富Fe固溶体,影响到涂层组织和成分变化。分析指出:Fe在涂层中的扩散是硼化铬转变成含铁硼化铬的诱导因素,Cr的重新分布同样受Fe扩散所控制,硼在钢中扩散未导致气阀机械性能恶化,分析认为:在气阀使用工况下,PSR-1涂层组织稳定性是满意的。

 
<< 更多相关文摘    
图标索引 相关查询

 


 
CNKI小工具
在英文学术搜索中查有关性能恶化的内容
在知识搜索中查有关性能恶化的内容
在数字搜索中查有关性能恶化的内容
在概念知识元中查有关性能恶化的内容
在学术趋势中查有关性能恶化的内容
 
 

CNKI主页设CNKI翻译助手为主页 | 收藏CNKI翻译助手 | 广告服务 | 英文学术搜索
版权图标  2008 CNKI-中国知网
京ICP证040431号 互联网出版许可证 新出网证(京)字008号
北京市公安局海淀分局 备案号:110 1081725
版权图标 2008中国知网(cnki) 中国学术期刊(光盘版)电子杂志社