等效噪聲壓 的英文怎麼說
中文拼音 [děngxiàozàoshēngyā]
等效噪聲壓
英文
equivalent noise pressure-
As the microbolometer which is voltage biased express some characters different from other infrared detectors under the effect of electric heat and infrared radiation together, the computing method of parameters, such as responsivity, noise, noise equivalent temperature different ( netd ), noise equivalent power ( nep ), optical gain, detectivity and so on is given in this paper. some of these parameters are particular compared with other detectors, and some have difference between microbolometer and other detectors
由於微測輻射熱計在施加偏置電壓的情況下，電熱效應與紅外輻射的共同作用使它表現出與其他紅外探測器完全不同的一些特徵，文中給出了響應率、噪聲、噪聲等效功率、噪聲等效溫差、光學增益、探測率等參數的計算方法，這些參數中的部分是微測輻射熱計獨有的，或者與其他的紅外探測器的同一參數有所區別。Wt has been applied to denoising, data compression, and resolution of overlapping signals in analytical chemistry that includes flow injection analysis ( fia ), voltammetric analysis, high performance liquid chromatography ( hplc ), infrared ( ir ) spectroscopy, mass spectroscopy ( ms ), nuclear magnetic resonance ( nmr ) spectroscopy, ultraviolet - visible ( uv - vis ) spectroscopy, photoacoustic spectroscopy ( pas ), extended x - ray absorption fine structure ( exafs ) spectrum, etc
在分析化學領域中，小波變換在流動注射分析、伏安分析、高效液相色譜、紅外光譜、質譜、核磁共振譜、可見紫外光譜、光聲光譜、擴展x -射線吸收精細結構（ exafs ）譜等分析化學信號的平滑濾噪、數據壓縮、重疊信號解析等方面都有成功的應用。These characteristics and phenomenons have effect on the quality of gear pump, and it is difficult relatively to research them by theory. at present the research is limited to the phase of examination testing. theoretic research of the characteristics and the phenomenons of polymer gear pump are blank in china when the gear pump feeds the viscous polymer liquid of chemical flow with high temperature and high pressure
齒輪泵除具有流量和容積效率、扭矩和機械效率、功率和總效率等基本特性外，還存在著困油、噪聲和氣穴等現象，這些特性和現象直接影響齒輪泵的質量，對斜齒齒輪泵的這些特性和現象的理論研究難度較大，目前大多仍局限於實驗測試研究階段，而聚合物齒輪泵在輸送化工流程中的高溫、高壓的粘流態聚合物時特性的理論研究在國內基本還處于空白。Radio - frequency noise jamming is an effective jamming to pulse compressed ( pc ) radar. it shows the best jam quality when it ' s bandwidth equals to the jammed signal ' s bandwidth and it ' s central frequency equals to that of the jammed radar ' s receiver
射頻噪聲干擾對脈沖壓縮雷達是一種有效干擾，在其帶寬等於雷達信號帶寬，中心頻率對準雷達的中心頻率時具有最佳的干擾品質。After simulating the model of water hydraulic valves, the velocity distribution, pressure distribution, energy distribution can be obtained and relations between the valve channel and the energy loss, the negative pressure distribution can be analyzed, which offers the theory foundation for designing water hydraulic valves with the high efficiency, low energy loss and low noise
通過對水壓閥模型的cfd穩態和瞬態解析，可以得到水壓閥內流場的速度分佈、壓力分佈及能量分佈，據此定性分析流道結構（速度、壓力、流動的分離與再附壁，旋渦的產生與消失等）與能量損失、負壓分佈等的關系，從而為設計出高效率、低能耗、低噪聲的水壓閥提供理論依據。In this paper the train running noise level has been predicted with the theory of point sound source. the sound exposure level of a train set pass, equivalent continuous sound level and maximum sound level of a train set pass has been taken as estimate values, and some kinds of affixation attenuation on the course of noise propagation is considered, then the corresponding visual software has been developed. these make it convenient and precise to predict the noise level
本文從點聲源的理論出發，對列車運行噪聲進行預測計算，採用一列車通過時的單發暴露聲級、時間特性的最大聲壓級和一定時間內的等效聲級等作為噪聲評價量，並考慮了噪聲傳播過程中的各種附加衰減，編制了相應的可視化軟體，使噪聲預測計算方便、準確。Scroll compressor, used as main engine in auto aircondition system, has small volume, light weight, low noise, low vibration, good seal, high volume efficiency and high heat insulation efficiency
渦旋壓縮機是汽車空調器的製冷主機，具有體積小、重量輕、低噪聲、低振動、密封好、容積效率和絕熱效率高等優點。Some functional blocks are set up with the basic block provided by spw, and some is programmed with c language. after the simulation of pulse compress mtd radar, the effect of some jamming signals is analyzed. especially, the jamming signal of high pulse repeat frequency is discussed
完成脈沖壓縮mtd雷達的建模以後，又討論分析了幾種常見的干擾式樣，如噪聲調幅干擾、噪聲調頻干擾等，著重討論了高重頻噪聲調頻脈沖信號的干擾效果，並對幾種不同形式信號的干擾效果進行了比較和分析。The disposal of the valves and intake manifold structure not only affect fresh air charge but airflow in the cylinder, which immediately affect combustion efficiency and the performance of dynamic, economic and emission. the structure of the air distributing institution has influence on charging efficiency and the noise of engine. the combustion chamber affects compression scale which has great influence on dynamical performance ; f / v which affects the exhaust of hc ; squash area and clearance which have great influence on the intensity of squash
氣缸蓋的氣門排列方式與氣道結構形式影響進氣充量和氣流在氣缸內的運動，從而影響了燃燒效率，對整機的動力性、經濟性以及排放都有直接的影響；配氣機構的形式影響充氣系數和整機噪聲等；缸蓋燃燒室決定了影響整機動力性能的壓縮比，影響hc排放的f / v和對擠流起決定性作用的擠氣面積以及擠氣間隙，所以燃燒室對整機動力性、經濟性、排放等都有重要的影響；氣缸蓋是整機熱負荷與熱應力最大的部件之一，熱負荷過高將不利於發動機壽命以及可靠性的提高。The pressure oscillation in piping system can lower the efficiency of the pump, cause the additional consume of energy and emit noise, deteriorate the working condition of the accessory
管道系統中的壓力脈動會對管道系統中造成許多危害，例如它會降低泵的工作效率、增加額外的能耗、產生噪聲，使管道附件的工況變壞和造成管道振動等等。Therefore developing the environment simulation hermetic cabin that the stress, temperature, humidity, oxygen, carbon dioxide, vibration and noise etc can be adjusted, research many kinds of synthetically influences of multi - variable environment to the physiology function of animal such as single variable and the stress, temperature, humidity, oxygen, vibration and noise etc and its harm, looks for out the regularity of its influence to reach and probably gives rise to the critical scope of damage to the human body physiology function, and then but the measure of environment variable which sought actively to prevent and control inside the hermetic cabin looks has the meaning very much
因此，研製壓力、溫度、濕度、含氧量、振動和噪聲等可調節的環境模擬密封艙，深入研究單一變量和壓力、溫度、濕度、含氧量、振動和噪聲等多種變量環境對動物的生理功能的綜合影響及其危害，找出其影響的規律性及可能對人體生理功能產生損害的臨界范圍，進而尋求有效的預防和控制密封艙內部的環境變量的措施則顯得非常有意義。Abstract : the development trends of products in the world are intelligent products and gre en products. according to the statistics, the causes of ship pollution including a ir pollution, garbage pollution, water ballast pollution, noise turbulence and oil - leakage problem have been analysed. in the view of environmental pollution protec tion and ship design, the characters of green ship have been concluded. the concep tion of green ship and its design have been put forward
文摘:根據統計資料，分析了船舶產生的大氣污染、垃圾污染、壓載水污染、噪聲污染及油泄漏污染的成因，從防治環境污染和船舶設計的角度，概括了綠色船舶環保、實效、節能等特點，提出綠色船舶的概念及設計構想The units " vibration, noise and pressure fluctuation in the draft tube are measured in wanjiazhai hydro power station. eighteen measuring points were arranged on the 2 # and 5 # units respectively
尾水管壓力脈動以及噪聲等重要參數進行測量分析，試驗包括2 #機組和5 #機組各18個有效測點According to the characteristics of the work condition is wretched and the signals are affected seriously by kinds of random noise etc., the data smoothing method is used in the pressure and flow signal processing, it reduces the effect of the random noises, and has a good result
根據液壓系統工作環境惡劣，各種隨機干擾對檢測信號影響大等特點，將數據平滑方法用於壓力、流量信號檢測數據處理中，有效地減小了各種隨機噪聲的影響，具有很好的效果。分享友人