水平正方波 的英文怎麼說

中文拼音 [shuǐpíngzhēngfāngbō]
水平正方波 英文
horizontal square wave
  • 水 : 名詞1 （由兩個氫原子和一個氧原子結合而成的液體） water 2 （河流） river 3 （指江、河、湖、海、洋...
  • 平 : Ⅰ形容詞1 （沒有高低凹凸 不頃斜） flat; level; even; smooth 2 （高度相同; 不相上下） on the same l...
  • 正 : 正名詞（正月） the first month of the lunar year; the first moon
  • 方 : Ⅰ名詞1 （方形; 方體） square 2 [數學] （乘方） involution; power 3 （方向） direction 4 （方面） ...
  • 波 : Ⅰ名詞1 （波浪） wave 2 [物理學] （振動傳播的過程） wave 3 （意外變化） an unexpected turn of even...
  • 水平 : 1. （跟水面平行的） horizontal;level2. （達到的高度） standard; level
  • 方波 : katanami
  1. This has since been confirmed by russian sources ; the transmitter consists of two swept - frequency generators of sinusoidal voltage and two parallel horizontal grounded antennas, each about 60 km long

    這一點被來自俄方的消息所證實；發射機有兩個掃頻發生器，產生正弦波，同時有兩幅相互平行的水平地面天線，每個天線有60千米長。
  2. Objective : to investigate the effect of pumpless portosystemic bypass in clinical piggyback liver transplantation. methods : after catheterized inferior mesenteric vein, the silastic catheter ( filled with heparin saline ) was connected with the catheterized tube of internal jugular vein or subclavian vein in four piggyback liver transplantation patients. the channel was opened after the portal vein was occluded. the portal vein blood poured into the superior vena cava through the pumpless channel. the changes of mesenteric congestion, portal vein pressure, blood pressure and pulse were observed. results : during the occlusion of portal vein, the portal vein pressure was increased greatly, the intestine was congested and swelled obviously and the blood pressure and pulse fluctuated gently. after the pumpless bypass opened, intestinal congestion and swell were abated markedly, the portal pressure, blood pressure and pulse gradually returned to normal range. conclusions : pumpless portosystemic bypass shows a great effect on clinical piggyback liver transplantation. it is a feasible and economical method

    目的探討背駝式原位肝移植術中採用體外門-體靜脈無泵轉流的臨床效果.方法4例行背駝式原位肝移植患者，腸系膜下靜脈屬支插管經體外硅膠管（充滿肝素鹽水）與頸內靜脈或鎖骨下靜脈插管相接，在阻斷門靜脈后開通腸系膜下靜脈插管，門靜脈血從體外無泵轉流管流入上腔靜脈，觀察轉流前後腸道瘀血、門靜脈壓、血壓、脈搏等變化情況.結果門靜脈阻斷后腸道明顯瘀血、腫脹，門靜脈壓力明顯升高，血壓、脈搏有不同程度的波動，無泵門靜脈轉流開放后，腸道瘀血、腫脹明顯好轉，門靜脈壓力逐漸恢復正常水平，血壓、脈搏恢復正常.結論背駝式原位肝移植術中體外門-體靜脈無泵流具有方便、經濟、實用等優點，具有良好的臨床效果
  3. In viewing of the characteristics of propagation of 3d converted wave, studies are performed on the processing methods of 3d converted waves, such as horizontal component rotation, calculation of 3d transition point, hyperbolic velocity analysis and nmo ( normal moveout ) correction of 3d converted wave, and non - hyperbolic velocity ratio analysis and nmo correction of 3d converted wave

    基於三維轉換波傳播特點，對三維轉換波資料處理方法進行了研究，包括水平分量旋轉，三維轉換點計算、三維轉換波雙曲速度分析與動校正、三維轉換波非雙曲速度比分析與動校正等。
  4. Inside the film, the field varies sinusoidally and the entire surface-wave mode propagates alone the horizontal z direction.

    在薄膜內，場按正弦函數變化，整個表面波模沿水平Z方向傳播。
  5. Data used in this work are north pacific ssta, 160 stations precipitation of china, and ncep reanalysis data. main results are as follow : ( 1 ) it is found that a apparent transition of north pacific ssta in later 1970 ' s : eastern and middle - equatorial pacific ssta turns from cold to warm with area extending, and mid - latitude pacific ( west wind drift zone ) turns from warm to cold. during this transition of ssta, different characters also appear in el nino and la nina : before 1976, la nina happens more frequently, and its duration is longer, el nino zone develops from negative ssta in the early stage ; after 1976, el nino happens a little bit frequent and longer with more intensity than before, el nino zone develops from positive ssta in the early stage ; the course of ssta variation has an enso cycle of 2 - 6 years, annual oscillation of 8 - 9 years, and decadal variation of about 22 years

    本文採用1950 - 1999年北太平洋海表溫度（ sst ） 、中國160站夏季降水和ncep再分析的歐亞500hpa高度場等資料，利用eof 、 svd 、小波分析、合成分析和相關分析等方法，在分析北太平洋海溫時空分佈特徵的基礎上，著重探討了海溫異常及其年代際變化對我國東部降水的影響，並對降水、高度場和海溫三者之間的關系進行了分析，以試圖尋找三者異常之間可能的聯系，主要結論如下： （ 1 ） 1976年前後，北太平洋海溫經歷了一次明顯的轉變，赤道中、東太平洋厄爾尼諾海區由冷轉暖，暖水范圍增大，中緯度西風漂流區海溫由暖轉冷；在這樣的年代際背景下，厄爾尼諾、拉尼娜事件在不同的時期也有不同的特徵：在76年前，拉尼娜事件發生頻率高，持續時間長，事件起始於負海溫距平；而76年後，則是厄爾尼諾事件發生頻率略高，持續時間長，強度增大，事件起始於正海溫距平。
  6. However, df pre - processing is not required in a interferometer direction finder. it only makes use of the phase relations or differences of sensors disposed at different position. azimuth and elevation are caculated from the phase differences or displayed directly on a crt drived by the voltage or current from the phase differences

    干涉儀測向不必進行測向信號預處理而是直接或間接求取在空間上分開的傳感器上感應電勢之間的相位關系，即干涉相位差，方位角或仰角是直接由干涉相位差計算得到，或將兩基線正交的天線陣的干涉相位差轉化為驅動電壓（電流）分別加到crt陰極顯示器的垂直偏轉線圈和水平偏轉線圈，模擬顯示出來波方位，干涉儀測向為典型的相位測向方法。
  7. Researches the basis watermark managing works particularly and systemly. there are many works to do on watermak technology except watermark embedding and extraction arithmetics such as the watermark choosing, encoding, modulating, demodulating and the watermark capacity. these prior and ultimate works ensure that the arithmetic is brought into effect. just understanding these, this paper analyses and researches the basic watermark theoretics in many pages. it brings forward chaos modulation on watermark modulating, brings forward chaos permuting on image permuting, introduces bch encoding on letter watermark processing and discusses the approximate estimate of the watermark capacity in dct domain and dwt domain by applying the current communication theoretics. there works not only extend ways for the later work but also are significative on watermark research

    全面系統地研究了水印信號的處理技術數字水印技術除了水印嵌入和提取的演算法外，還有許多工作需要做，如水印的選碼、編碼、調制、解調、能量的確定等等，這些預處理和后處理工作是演算法有效實施的必要保證，正是基於這樣的認識，本文利用較大的篇幅對水印的基本理論知識進行了詳細的分析和研究，在水印的調制方面，提出了混沌調製法；在圖像水印的置亂方面，提出了混沌置亂法；在文字水印的處理上，引入了bch編碼；在水印容量分析方面，結合現代通信理論，對圖像在dct域和小波域內的水印容量估算進行了詳細的探討，這些工作不僅為本文後期工作鋪平了道路，而且對數字水印的研究具有重要的意義。
  8. Secondly, the content, evaluating guideline system of the food security cost were discussed, and the quantitative analysis of the food security cost at the view point of center finance expend from reform and opening of china was given. threely, the influnce factors of chinese food security under wto were analyzed thoroughly, and the new stratagem of food security - - big food and little grain ration was proposed, and the food security and its types were discussed. the article thought that ensureing the food security hi the reason cost is the process both food security control was improved and microcosmic foundation was intensified increasingly, that the moderation scale of chinese food security repertory, that the rules, which includes negative correlation alteration of agriculture proportion and modern, etc. must be followed, and that the project of water from south to north must give attention to two or more things water need of food produce ability and output

    認為中國糧食安全與成本優化的過程是一個不斷改進糧食安全調控工作的過程，也是使微觀基礎得以強化的過程；按照社會可承受2的糧食可供波動與控制糧食儲備成本的標準計算，中國糧食安全儲備的適度規模為48872千噸；應根據「農業比重與農業現代化的負相關變動」 、 「比較優勢與農業保護的平衡運用」 、 「大糧食消費與增值的備擇性」 、 「產業結構調整與糧食產能保護的兼容性」等要求建立與實施旨在謀求糧食安全與產業結構調整協調的評價指標體系；北方地區對中國糧食生產與增產具有很強的正相關性，然而它正遭受著越來越嚴重的水缺乏的影響；南水北調工程必須兼顧糧食產能的用水需要，以有效緩解糧食需求的相對穩定與糧食產量波動相對較大之間的矛盾，從而達到減少儲備、節約成本的目的。
  9. Solving the static correction problems under complex near - surface conditions is a systematic engineering. first, careful field weathering investigation must be done, then we have to take full advantages of refraction first - break information and field weathering investigation information to compute field static correction and large residual static corrections with various refraction first - break statics methods, finally, reflection statics methods are used iteratively to solve the residual statics problems. to solve serious static correction problems in complex near - surface areas of western china, different refraction first - break statics methods are studied in this thesis. the main study contents are as follows : 1 ) the propagation features of refraction for horizontal layered and dip media are studied firstly, it lays a good theoretical foundation for later statics method studies

    本文針對目前西部油氣勘探中迫切需要解決的復雜地表區靜校正技術難題，對初至折射波解決二維和三維長、短波長靜校正問題的正反演方法進行了深入的研究和探討，研究內容主要包括（ 1 ）水平層狀和傾斜界面折射波的傳播規律，為后續的折射靜校正方法研究奠定理論基礎； （ 2 ）二維復雜層狀介質地震折射波正演方法，該方法可適用於折射面起伏不大、低速層和折射層速度變化不大的情況。
  10. According to the traditional rytov method, the theory model of modified rytov method is given for plane wave and spherical wave propagation in the atmospheric turbulence, and the characters of optical scintillation for waves propagation along horizontal paths is studied, the inner scale effect is considered, especially. then, the results, calculated by the modified rytov method, is compared with the experiment measurement, it shows that the modified method is suitable in moderate atmospheric turbulence

    本文介紹了光波在湍流大氣中傳播的弱起伏和強起伏理論，從經典弱起伏理論出發，給出了光波在水平傳輸時的修正rytov方法理論模型，分析了在考慮湍流內尺度的影響下平面波和球面波入射時的閃爍特性，在中等湍流區計算結果與最近實驗結果符合得較好。
  11. Furthermore, we propose a parallel strategy to solve the multiple templates, multiple images " matching. then, we propose a skew estimation and rectification algorithm, in which wavelet transform is used ingeniously. we get horizontal edges and vertical edges simultaneously, and compute the sum of edge projections " variance in these two directions as no - skew measure

    本文提出了基於圖象規則邊緣結構的偏斜糾正演算法ser ，該演算法巧妙地應用了小波變換，同時得到水平和垂直兩方向上的邊緣分量，求取兩方向邊緣投影的方差之和作為無偏斜度量。
  12. E xperiments show that the amended method is better than that in reference 12. as the same time the method can combine with the wavelet transformation to locate the characters. by multi - resolution analysis and pyramid decomposition, the edge components with different spatial resolutions and different directions can be acquired, among which, the detail components have the most distinguished texture features standing for the object region, then by further morphological operations, the useless information is greatly decreased and the last object text region is acquired

    分析了各個方向邊緣經小波變換后的特點，用具有良好時頻局部和變尺度特徵的小波分析方法提取出不同空間解析度，水平和垂直及對角線方向的邊緣子圖像，把滿足水平和垂直方向能量閾值區域進行合併，經過去噪后，用對角線方向能量閾值即高高頻能量作為判斷標準，確定是否是真正的字元區。
  13. The part of the experimental research analyses the causes that pupils with learning disability in ningbo receive worse grades than normal students by means of diaganostic test of achievement factor ( dtaf ) : learning intention, learmng intention of different subject, learing plan, learning skillsjearning skills of different subject, leaming environment. the 300 pupils come from 15 primary schools in ningbo. as a result, we find out that their grades are closely related to their learning intention and skills and have nothing to do with learning plan and learning environment. we following psychological features : they have normal iq, but there is a tendency for them to develop mal - personality ; they are menttally less healthy than normal students. the results of our research provide scientific basis for educators to improve the learning of students with l d elementary schools in ningbo erea

    實驗研究部分採用《學習因素診斷量表》 （ dtaf ）從學習動機、不同學科學習動機、學習計劃、學習技能、不同學科的學習技能以及學習環境六個方面分析了寧波市15所小學300名學習困難學生學習成績明顯低於一般學生的原因，研究結果表明：學習困難學生成績差與學習動機、不同學科的學習動機、學習技能、不同學科的學習技能有密切關系，與學習計劃、學習環境關系不大；寧波市小學學習困難學生的心理特徵是智力發展是基本正常的，但其性格特徵有不良發展的傾向，心理健康水平也比一般小學生差。
  14. Inside the film, the field varies sinusoidally and the entire surface - wave mode propagates alone the horizontal z direction

    在薄膜內，場按正弦函數變化，整個表面波模沿水平z方向傳播。
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