noise index 中文意思是什麼
noise index
解釋
噪聲指數-
Universal type that guangzhou dongchen electric vehicle co., ltd develop the latest electric car mix with the motive to become soon the green environmental protection motor car, it broke the traditional consciousness, the way that whole car lines that tradition of limitless become soon, that car have the zero row to put, free from pollution, have no the noise, mentally retarded consume, start steady, long drive route, excellent climbing ability, the special advantage of low etc., function index sign of movement cost is already the advanced level, it broke the tool of traditional transportation means of transportation flowing freely of world, now a humanities culture for be in the leading, a nature consciousness for be in the leading
廣州東辰電動車有限公司最新款的普及型混合動力變速綠色環保電動車，它打破了傳統的無極變速方式，該車具有零排放、無污染、無噪音、低能耗、起動穩、行程長、爬坡力強、運行成本低等獨特優點，性能指標已達世界先進水平，它打破了傳統交通代步工具的局限意識，整車線條流暢，體現一種領先的人文文化，一種領先的自然意識。 -
This paper mainly focuses on the noise limiting by means of the direct sequence spread spectrum ( dsss ) and the analysis of the transmission performance of the plc and some digital modulation technology. the contents of the paper is as follows : 1 ) the technical feasibility is proved after simulating noise limiting principle of dsss by means of systemview, the simulation software ; 2 ) a kind of band pass filter ( bpf ) is realized according to the requirement of filter and the principle of butterworth approximation, which satisfies the index of performance of dsss. 3 ) the low voltage plc system includes the sc1128, the specific modulation / demodulation ic, the bpf filter and other circuit components, furthermore, the control function of system is realized by means of the personal computer and the microcontroller
本課題在對低壓電力線的傳輸特性和數字調制技術進行分析的基礎上，將通信理論中的直接序列擴頻技術（ dsss ）用於解決低壓電力線通信的干擾問題，主要研究內容如下： （ 1 ）用通信模擬軟體systemview對dsss技術的通信和抗干擾原理進行模擬分析，分別對時域和頻域下採用dsss技術前後接收信號的頻譜進行分析，驗證dsss技術在本系統中的可行性； （ 2 ）由dsss技術對濾波系統的要求，根據濾波理論分析了巴特沃思型濾波器的逼近原理並設計了合適的濾波電路； （ 3 ）用調制解調晶元sc1128和自行設計的濾波器加之輔助外圍電路，構造出低壓電力線載波通信系統，並採用atmel公司的單片機設計了接收和發射電路的微控制器； （ 4 ）分別對採取抗干擾措施前後輸入和輸出信號進行對比實驗，並對結果進行分析，驗證了dsss技術對干擾信號的抑制作用。 -
Abstract : the colored sandwich steel plate has been successfully used in the noise control at the cooler center in the paint shop of dcac wuhan factory, expressed with laudness index, noise level is reduced 79. 65 % after control. the effect is very excellent
文摘:在噪聲治理中，採用彩色夾心板作隔聲構件，在武漢總廠塗裝分廠製冷站應用成功，用響度指數這個絕對數表示，治理前後噪聲總響度降低79 . 65 % ，隔聲效果非常好，達到了預期的目的。 -
The noise filtering of real estate options based on price index
基於價格指數的房地產實物期權嘈聲濾波研究 -
The al - di ( articulation index weighted - directivity index ), which is a measure for the improvement of the signal - to - noise ratio, is increased by about 30 percent for the trimictm technology. this corresponds to an improvement in speech intelligibility of up to 30 %
研究亦顯示，在吵雜環境中，即語音與噪音的比率較差時，方向性麥克風對聽障者尤其有效，言語理解能力可提升至30 % ，使聽障者更容易與人交談。 -
A good core index excludes this noise, leaving only the enduring part of inflation that reflects the weight of spending in the economy
而一個良好的核心通脹指標排除了這一噪音，只留下通貨膨脹中可以反映經濟中花費權重的持續存在的這一部分。 -
In the simulation, we added index weighting noise estimation of measurement noise to improve stability and adaptability of filter
模擬中在線加入量測噪聲的指數加權時變噪聲估計器，使濾波器的穩定性和自適應能力顯著增強。 -
With regard to the environment, there was a decline in the air and noise index
環境方面，本港的空氣及噪音污染比前一年差。 -
The simulation analysis using the ideal spectrum signal prototype which is constructed based on the infrared ray spectrum of octane level measure indicates that this method gives better signal to noise ratios and performance index ( g ) than conventional wavelet thresholding method via different kinds of mother wavelets
模擬實驗結果顯示，對于不同的小波母函數，採用該方法去噪后的結果優于未經能量元轉換的原方法，而且對于含有較高頻信息的信號，該方法的結果比原方法明顯更優越。 -
The ratio of signal level to noise level ( sn ratio ) is a very important index for vtr and the noise is chiefly from magnetic recording system
信噪比是評價錄像機性能的一個重要指標，而錄像機的噪音主要來源於磁記錄系統。 -
Considering space environment of laser atmospheric communication, the thesis analyses issues of atmosphere turbulance and interference of background light noise during the course of transmission, furthermore, discusses the structure and basic constitute of the laser atmospheric communication system. combining the technical index requirement of the subject, it provides design scheme and circuit of the transmitting and receiving system
論文從激光大氣通信的空間環境出發，對光信號傳輸過程中通道中的大氣湍流和背景光噪聲干擾問題進行了分析，並在此基礎上論述了激光大氣通信系統的結構和基本組成，結合課題的技術指標，給出了發射和接收系統的設計方案及其電路實現。 -
It admits of no delay to develop high stability crystal oscillator and enhance its phase noise index to reduce the effect of jitter to the performance of the whole system
研製高穩定晶體振蕩器，提高相位噪聲指標、減少抖動對整體性能的影響，已經成為刻不容緩的任務。 -
The structural optimization based on noise attenuation is studied, in which the thickness of each link is taken as the design variable, and the weighting sum of structural mass and measure of the structural acoustic performance is taken as the synthesis performance index
選取機構桿件厚度為設計變量，以機構質量和聲輻射性能量度的加權和為目標函數，應用改進了的變尺度優化演算法對優化問題進行了求解。 -
In this paper, the influencing factors of acoustic environmental quality of residential area including noise from transportation, industry, construction and society were analyzed, the comprehensive influence of acoustic environmental quality of residential area between indoor and outdoor ones was studied, the evaluation index system of acoustic environmental quality of residential area based on influencing elements of acoustic environmental quality of indoor and outdoor ones was established, the control standard and improvement strategies including planning, technology and management of acoustic environmental quality of residential area were put forward, the gray clustering evaluation model of acoustic environmental quality of residential area was set up, and a case was evaluated
摘要分析了居住區聲環境質量的影響因素，包括交通、工業、施工和社會生活等噪聲；研究了居住區聲環境質量是居住區室外聲環境質量和室內聲環境質量的綜合影響反映；構建了基於居住區室外聲環境質量和住宅室內聲環境質量影響因子的居住區聲環境質量評價指標體系；提出了居住區聲環境質量分級控制標準；從規劃、技術和管理的等方面提出了居住區聲環境質量的控制措施和改善方案；建立了基於灰色聚類分析方法的居住區聲環境質量評價模型，並進行了實證評價應用。 -
The ica technique separated successfully electromyographic ( emg ) and electro - oculographic ( eog ) artifacts from eeg data ; accomplished vep strengthening and extraction ; separated watermarking and key from mixing digital image signals, even though under strong noise, the results still have very good performance index
獨立分量分析技術可以很好地分離出eeg數據中的肌電與眼動等干擾；實現了vep的增強與提取；很好地分離數字圖像信號中的水印與密鑰，即使在很強的干擾情況下，仍具有很好的性能指標。 -
The noise index should be definite, and the problem of noise integrating phenomenon with the indoor equipments should be considered. the improper units should have the noise elimination measure
建議明確噪聲指標，須考慮與室內設備的噪聲疊加問題，不符合要求的機組、空調通風系統必須有消聲處理措施。 -
Proper arrangement of them significantly reduces the energy consumed and noise level and ensures the input power and noise index, solves the problem of insufficient air volume supplied, and improves the indoor thermal comfort effectively
通過對這些部件的合理布置，大幅度降低機組能耗及噪聲，保證了產品輸入功率及噪聲指標，解決了傳統盤管在實際運行時風量小的問題，有效提高了空調房間的舒適性。 -
Erbium - doped optical waveguide amplifier has received extensive attention because it has several merits, such as low - loss, high gain, small size, low facture cost, small index of noise, small polarization relativity and convenient for integration
摻鉺光波導放大器具有損耗低、單位長度增益高、體積小、成本低、噪聲系數低、很小的極化相關性，便於集成等特點，正受到越來越廣泛的關注。
分享友人