表聲試驗 的英文怎麼說
中文拼音 [biǎoshēngshìyàn]
表聲試驗
英文
watch test-
Furthermore, it is also verified by chassis dyno tests that lpg motorcycle has better emission performance than gasoline engine, and has better acceleration performance e. g. exceed acceleration than former gasoline engine, and has low noise level characteristics as well as has ability to achieve equivalent level fuel economy performance compared with former gasoline engine
整車動力性、經濟性和排放性轉鼓臺架試驗對比表明： lpg摩托車整體排放性能優于汽油摩托車；最高車速略有下降但加速性基本與汽油摩托車相同（超越加速性優于汽油摩托車） ； lpg摩托車具有良好的低噪聲特性，且整車燃料消耗率及其經濟性與原機基本相當。An under estimation of the hearing effects by the low frequency noise could be happened. that is to say, even if the a - weight sound level is small, the low frequency noise may annoy to listener by the different ways from the high frequency noise. so it is necessary to understand psychoacoustics in order to make noise quality evaluations that match the subjective experience of the purchaser
同時應用主觀評價方法?成對比較法（ paircomparisonstatisticalevaluationmethods ）對不同家用空調器噪聲進行主觀評價試驗，並與客觀評價結果進行了對比，結果表明：人主觀響應（煩躁程度）與各心理聲學評價指標之間均具有很高的相關性，相關系數一般均大於0 . 9 ，而與a計權聲壓級之間的相關系數只有0 . 78 。A minitype wireless noise measure system is designed to act as an automonitor, which has been proved to be a practical device
試驗結果表明，該系統可以有效獲得飛機的噪聲數據，測試結果與模擬結果比較吻合。By the result of these experiments, acoustic emission ( ae ) was chosen to use in the research. at the same time, we analyse the phenomenon of acoustic emission at the base of theory, the characteristic signal of acoustic emission which comes from the faulty bearing at the angle of application, and the expression of the characteristic signal. contrast was also made on the data achieved separately from vibrational signal and ae signal, and it is proved that ae is feasible and available to the diagnosis to the fault of the rolling bearing
主要工作有如下幾方面：對本段前期實驗室階段採用的振動法幅值域無量綱處理進行了分析，並研製了現場所使用的滾動軸承故障檢測裝置，將無量綱參數診斷法應用於段修現場，且做了大量試驗；對于現場試驗中所出現的問題進行了分析，提出將聲發射的方法用於軸承的在線故障診斷；從理論上分析了聲發射現象，從應用的角度分析故障軸承的聲發射信號的特徵以及聲發射信號特徵的表示方法，並在實驗室中，採用振動法和聲發射法實時檢測的實驗數據進行了對比和分析，證明了使用聲發射法對軸承故障檢測的可行性和有效性。The developing ratio of its long - term fc is up to 25 %. and the ultrasonic velocity was inspected out by way of ultrasonic - concrete technique : the maximum value was 5376m / s ; the minimum was 4386m / s. this explained that hpc in the experiments was very close - grained
採用超聲波混凝土檢測技術測得試件28d的最大波速值為5376m s ；試件最小波速也達到了4386m s ，這表明本試驗所獲得的混凝土試件的密實程度是相當高的。The tests were conducted in the hypersonic low density wind tunnel at nominal test conditions of mach 16, stagnation temperature 923k, stagnation pressure 1. 40mpa and 7. 30mpa. heat - transfer data were obtained on a hemisphere model, a sharp cone and a big blunt cone respectively by means of infrared thermal mapping techniques, that of a 0. 5mm thickness blunt cone by virtues of thermocouples. furth ermore, heat - transfer on all those models was calculated with the theoretical method
最後在名義m _ = 16 、 t _ 0 = 923k 、 p _ 0 = 1 . 40mpa及7 . 30mpa的高超聲速低密度風洞中，利用紅外熱圖技術獲得了半球圓柱、尖錐、大鈍頭三個模型表面熱流分佈，利用薄壁法技術得到了一壁厚為0 . 5mm的鈍錐模型表面的熱流分佈，並通過工程理論方法計算了模型表面的氣動熱，把理論計算結果與上述試驗結果比較，幾者符合得較好。Analysis and tests show that by using slope compensation, the open - loop instability, sub - harmonic oscillation, non - ideal closed - loop response and noise etc. when duly cycle above 50 %, can be reduced or eliminated
理論分析與試驗表明，通過引入斜坡補償可以抑制或消除占空比超過5 %時的開環不穩定性、次諧波振蕩傾向、不理想的閉環響應、噪聲等。It has shown that a good agreement between acoustic emission and transpiration, and the ae signal is a good water stress index for irrigation control
試驗結果表明，作物在水脅迫下產生的聲發射信號與蒸騰量等水分指標的一致性較好，對水分虧缺反應敏感，是一個良好的灌水指標。The experiments show that ultrasonic motors can operate under vacuum condition, but the performance is different from that under general condition, its unloaded speed decreases significantly, while the stall - torque increases a bit
試驗結果表明，超聲電機可以在真空環境下工作，但性能較常態環境下有所變化，其空載轉速明顯下降，堵轉力矩有所增大。6. the laboratory immersion testing has been shown that the sensor carrier for single sensor rataing reflactor is available for in - line inspection of small - diameter pipelines at the proper sampling frequcy and system amplititude
小管道液浸超聲檢測室內試驗表明，在適當的采樣率和系統增益的情況下，單探頭反射鏡式檢測頭完全可用於小管道的超聲智能檢測。Standard test method for ultrasonic examination from bored surfaces of cylindrical forgings
圓柱體鍛件表面砂心的超聲波測試的標準試驗方法The structure and the thickness of the coatings was inspected by the xjp - 2 metallography microscope, the structure morphology was tested by philips xl30 peg sem, and the adhesion between the foundation and the coating was examed by two methods : one is ws - 92 sound - producing coating adhesion nick testing, another is bending
利用xjp - 2型金相顯微鏡觀察鍍層組織並測其厚度， philipsxl30feg型掃描電鏡觀測鍍層表面的組織形貌，鍍層與基體的結合力採用ws - 92型聲發塗層附著力劃痕試驗和彎折法兩種方法來定性地檢測。Through pointing out the limitations of taguchi outer / inner orthogonal array experiment method, it has been studied that three methods : comprehensive noise factors, split - plot experiment and direct modeling of response using combined arrays, are alternatives to the orthogonal array design
3通過指出田口的內外正交表試驗中存在的缺陷，研究分析了替代正交試驗的三種方法：綜合噪聲因素法、裂區試驗法和利用結合表直接建立響應模型法。Experiment of nc generative ultrasonic grinding of ceramic blade surface was carried out with the grinding spindle assembly, the experimental results show that the spindle assembly and driving control system work well
採用研製的磨輪主軸部件進行了數控展成超聲磨削陶瓷直紋面工藝試驗，試驗結果表明主軸部件及驅動控制系統運行良好。Standard test method for ultrasonic surface examinations using electromagnetic acoustic transducer techniques
用電磁聲換能器技術進行超聲表面檢驗的標準試驗方法We made an improvement in overcoming the defects in speech signal adaptive delta modulation ( abbr. adm ), such as slope overloading and grain noise. in this method, numerical sliding average filtering was used for filtering decoding speech signal. experiments and analyses indicate that the method makes waveforms in good agreement between the decoding of adm and the original pulse coding modulation ( abbr. pcm ) signal, and considerably improves, the playback speech quality in naturalness, legibility and under standability
針對語音信號自適應增量調制（ adm ）方式中斜率過載和顆粒噪聲缺點，提出了一種改進方法，它利用滑動平均方法對解碼后的信號進行數字濾波.試驗和分析表明，該方法使解碼后的信號波形與原脈沖編碼調制（ pcm ）波形具有很好的一致性，使再生語音質量在自然度、清晰度和可懂度方面比改進前均有較大提高( 3 ) the effects of the random noise on the measured results, which are based on brightness temperature approach method and continuous measurement method, are evaluated. the experiment results demonstrate that the effect on brightness temperature approach method is uncertain and continuous measurement method can bear certain random noise
在某一溫度點下的各通道理論測量值加入一定的隨機噪聲，試驗結果表明:亮溫逼近法受隨機噪聲的影響是不確定的，而連續測量法可以承受一定的隨機噪聲影響。The relevance functions between total pressure recover coefficient and the parameters ( mach number, angle of attack, flow coefficient, angle of sideslip ) for subsonic submerged inlet in turbojet and turbofan engine were investigated
摘要根據某埋入式進氣道試驗數據建立了計算埋入式亞聲速進氣道總壓恢復系數的經驗公式，表現為關于馬赫數、流量系數、攻角、側滑角的函數。First of all, by establishing the observation model of complex harmonic signal and complex linear chirp signal respectively under the co - jamming of additive and multiply noise, the paper constructed cyclic moment detectors of different orders, deduced snr expression of the detector through theoretic analysis, discussed the relation of detector performance and noise statistical characteristic. the curve of detection performance is obtained through monte carlo simulation test, proving the related conclusion derived
首先，論文分別以加性和乘性噪聲聯合干擾下的復諧波信號和復線性調頻信號為觀測模型，構造了基於不同階次的循環矩檢測統計量，從理論上推導出了檢測器的信噪比表達式，分析了檢測器性能與噪聲統計特性的關系，通過monte - carlo模擬試驗得到了檢測性能的曲線，驗證了推導的有關結論。And then, adopting the same model, cyclic moment estimation statistic of different orders are constructed respectively, large sample variance expressions of the estimator through theoretic analysis are derived, as well as the constraint relation of estimator performance and noise statistical characteristic. the curve of estimation performance is obtained through monte carlo simulation test, which proves the related conclusion derived
然後，論文同樣以加性和乘性噪聲聯合干擾下的復諧波信號和復線性調頻信號為觀測模型，分別構造了基於不同階次的循環矩估計量，從理論上推導出了估計量的大樣本方差表達式，分析了估計量性能與噪聲統計特性的約束關系，通過monte - carlo模擬試驗得到了估計性能的曲線，驗證了推導的有關結論。分享友人