compression ratio 中文意思是什麼

compression ratio 解釋
壓比
  • compression : n. 1. 壓縮；壓緊；濃縮，緊縮。2. 加壓；壓抑。3. （表現的）簡練。4. 應壓試驗。
  • ratio : n. （pl. ratios）1. 比，比率，比值；比例；系數。2. 【經濟學】復本位制中金銀的法定比價。vt. 1. 用比例方式表達；求出…的比值；使…成比例。2. 將（相片）按比例放大或縮小。
  1. It will be seen that the higher the compression ratio, the higher the efficiency.

    可知壓縮比愈大效率愈高。
  2. New compression ratio pre - dispensation algorithm for multi - tiles images in jpeg

    2000多圖像片壓縮率預分配演算法
  3. The appropriate maximum stories and the appropriate maximum height of buildings are determined by using the various of control index, such as period, shear - compression ratio, allowable value of drift angle etc when earthquake fortification intensity is 8 degree

    用各項控制指標，如周期、剪壓比、軸壓比、層間位移角等進行對比分析，給出在8度區該結構的最大可建造層數和最大適用高度。
  4. Long - hole and geometrical proportion type of mixing unit is finally adapted in lpg supply system, and power and torque output of lpg engine are improved by increasing compression ratio, and ignition characteristic is tried to adjusted to satisfy engine performance. meantime emission performance and noise level of lpg engine at full - throttle and other various part - throttle operations are tested and compared with former gasoline engine. ( 3 ) it is verified by engine dyno tests that lpg engine has better synthesized performance at aspects of power and torque, fuel economy, as well as emission than former gasoline engine

    選擇了等比例長孔式混合器控制空燃比；通過提高壓縮比來彌補動力性的損失；以動力性為主控目標，對最大功率點、最大扭矩點、中等轉速、最低轉速點所對應的發動機轉速做了點火特性的調節；通過空燃比的合理控制，直接改善發動機的動力性、經濟和排放指標；作為對缸內燃燒過程的理論分析，進行了燃燒特性的實驗測試；對原汽油機和新開發的液化石油氣發動機，進行了外特性和部分負荷特性以及怠速的排放及噪聲對比性測試。
  5. During the process of measuring compression ratio, the viscous fluid instead of burning gas is applied to measure the maximal volume. residual volume and working volume of the engine combustion cylinder respectively

    在壓縮比測量裝置中，採用粘性液體，代替發動機工作燃氣，分別測量出發動機燃燒工作室的最大容積、余隙容積和工作容積，方便地計算出發動機的壓縮比。
  6. The shear mechanism, failure mode, deformation capacity, bearing capacity and the reliability of the anchored angle steels of the wrapped steel concrete cast - in - site frame typical story exterior joints under the middle and high axial compression ratio ( n = 0. 3, 0. 5, 0. 6 ), the working performance, failure mode, and the shear capacity of top story joints under the crack moment, the hysteresis characteristic and the dissipation energy capacity of the test joints are all analysed based on the 1 / 4 model pseudo - static tests of five specimens of wrapped steel concrete cast - in - site frame exterior joints, which varied in axial compression ratio, distribution of the beam angle steels and the stirrup ratio

    基於上述分析，本次試驗通過五個外包鋼混凝土邊節點1 4比例模型的偽靜力試驗，以柱的軸壓比、梁角鋼布置形式、配箍率等為主要參數，分析外包鋼混凝土現澆框架一般層邊節點在中高軸壓比（ n = 0 . 3 、 0 . 5 、 0 . 6 ）條件下，節點的抗剪機理、破壞模式、變形能力、承載能力和角鋼錨固的可靠性；分析了頂層邊節點在張開彎矩作用下的工作性能、破壞模式和抗剪承載力；分析了試驗節點的滯回性能和耗能能力。
  7. Ab stract the author is engaged in the studying and manufacturing of an intelligent, capable and portable, multifuctional electrocardio monitoring equipment with aduc8 12 single - chip. microcomputer. the equipment can gather and record the electrocardio signals automatically, also can analyse it at real time, and send it out to the monitoring center through the telephone at real time or send it out by serial interfaces to computer. it use the graph display device to show the electrocardio waves and menu. cooperated with buttons, it provides amicable interface, and makes operation simple and convenient. based on the feature of the electrocardio signals, this paper also proposes a electrocardio distortionless data compression algorithm. the algorithn is simple but effective, it can process the data at real time, and the compression - ratio reaches 2 6

    所研製的監護儀能長時間採集和記錄心電信號，同時可進行心電數據的實時分析，並可通過電話向監護中心實時發送，也可通過串列介面發送至微機。該監護儀採用圖形液晶顯示器顯示心電波形和菜單，配合按鍵提供友好的人機界面，操作簡潔。本文還根據心電波形的特徵，提出一種心電數據的無損壓縮演算法，該演算法簡單有效，能實時實現，壓縮比達到2 6倍。
  8. Researchers have developed many methods for image compression, and fractal image compression, as a new scheme of image compression, has received a great deal of attention and study from researchers all over the world in the field of image compression because of its desirable properties such as fast decoding, resolution independence of decoded image and high compression ratio

    目前人們已經提出了很多壓縮方法，而分形圖像壓縮作為一種新的壓縮方法，因其具有壓縮比高、解碼速度快、解碼圖像與解析度無關等優點，十余年來引起了眾多學者的關注和研究。
  9. Predictions were made on the ductility of the joint core when shear compression ratio, reinforcement contant and axial force ratio were different

    進一步利用jap程序預測了不同剪壓比，不同配筋特徵值及不同軸壓比條件下節點區的延性變化規律。
  10. Thus the coding of a color head image actually become the coding of a color component. the experimental results show this method not only improve the coding efficient and compression ratio but also obtain satisfactory effect of the reconstructed image. at the same time, this method also enables gray head images to be converted into color head images

    這樣對彩色人頭圖象的編碼實質上就變成了對其中的一個色彩分量的編碼，實驗結果表明該方法不僅提高了編碼效率和壓縮比，也能獲得較滿意的重構圖象效果，同時還使得將灰度人頭圖象轉換成彩色人頭圖象成為可能。
  11. In the fifth chapter, author improved huffman coding and lzw coding, which can not only increase the compression ratio, and also make the programe more useful in varied circumstance

    在第五章中，作者對huffman編碼和lzw編碼作了改進，這不僅可以在一定程度上提高壓縮比，而且使它們更加靈活通用。
  12. So this part is dealt with separately. dcpm method is employed to improve the quality of image coding with making full of the relativity of the wavelet coefficients. according to the different importance degree and vision character of the high frequency wavelet coefficients, different thresholds are applied to remove small coefficients ; then mannos module are applied to remove the visual redundancy ; in order to produce more zero - tree, horizontal and vertical wavelet coefficients are transformed accordingly to improve the compression ratio

    對于小波變換后的小波系數的高頻部分，根據其分佈特性和人眼的視覺特性，採用視覺模型對零樹量化過程的閾值進行修正，有效地去除視覺冗餘；對各高頻子圖採用多級樹集合分割的零樹編碼方法，有效地利用系數編碼剩餘符號，進一步提高壓縮比。
  13. The best compression ratio and fuel injection advance angle are calculated through mess optimization calculation program of language c. on the basis, optimization simulation of inlet and exhaust timing has been carried with the diesel engine working model to increase diesel engine ' s volumetric efficient

    在此基礎上，利用柴油機工作過程模型，對進排氣正時進行了優化計算，以提高柴油機的充氣效率，改善燃燒性能，為進一步改善該機性能指明了方向。
  14. A new calculation method for optimizing diesel engine performance, called nonlinear regression - mess method, is put forward. in this paper, 25 groups of simulated values are calculated from the diesel engine working model, specific fuel consumption, peak pressure, rate of pressure rise, nox and peak temperature are fitted into explicit function about compression ratio and fuel injection advance angle

    本文利用柴油機工作過程模型，得出25組模擬計算數據，利用非線性回歸將油耗、最大爆發壓力、壓力升高率、 no _ x濃度及最高燃燒溫度擬合成壓縮比和噴油提前角的顯函數，並用網格法進行優化，用c語言編制了優化計算程序，得出最佳的壓縮比和噴油提前角，使其優化匹配。
  15. So it is proved that the working model is right, and on the basis, the influences of the compression ratio and fuel injection advance angle on the diesel engine ' s combustion performance are studied. ( 2 ) energy resource and environment protection are two important problems that diesel engine is faced with. so in this paper the constrained optimization is studied in order to decrease fuel consumption within the limitation of the regulation on exhaust emission and power output

    （ 2 ）能源和環境保護是柴油機存在和發展的兩大問題，因此本文在滿足排放法規及柴油機動力性的基礎上，以降低油耗為主要研究目標，進行有約束條件的優化計算，並提出了一種新的柴油機工作過程優化計算方法? ?非線性回歸?網格法。
  16. Lcr low compression ratio

    低壓縮比
  17. 3 analysis on axial compression ratio of l, t and + - shaped columns is undertaken. it indicates that for l and t - shaped columns, axial compression ration is very low when web is in compression, but for + - shaped columns, axial compression ratio approaches to that of rectangular columns

    3對l 、 t 、十形柱軸壓比限值進行計算分析，指出l 、 t形柱當腹板受壓時軸壓比限值很低，十形柱軸壓比限值同矩形柱相差不多。
  18. Taking the storage and transfer of mass image data into consideration, not only could favorable image compression techniques achieve high compression ratio and fidelity, they should also meet the demands of web applications, image compression need further detailed study, thus having developed into a specialized research field known as image coding

    出於圖像存儲技術和圖像通信的考慮，良好的圖像壓縮技術不僅能夠實現高壓縮率和高保真率，還能滿足諸如漸進傳輸、圖像漸現等網路應用的需要。因此，為了滿足實際應用的需要，有必要對圖像數據壓縮處理進行深入細致的研究，目前已發展成為專門的研究領域:圖像編碼。
  19. Thus, 21mj of single pulse energy has been obtained. in the case of 10 % reflectivity, less than 3. 7ns with 8. 6 : 1 pulse - compression ratio has been observed

    應用200 m光纖獲得了21mj的四通放大輸出能量並在能量反射率10的情況下獲得了高達8 . 6倍的脈沖壓縮比。
  20. The preliminary conclusion shows that the maximum rate of compression ratio changes is about 2 % and the change rate is less when the peak - to - valley value of wavefront aberration is less than a quarter of wavelength and incident angle is properly

    脈沖壓縮光柵對系統達到衍射極限時，在選擇適當的入射角度時，光柵波像差所引起的脈沖壓縮比變化並不大。
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