脈序 的英文怎麼說

中文拼音 [mài]
脈序 英文
[植物學] nervuration; venation; nervation; nervature; veining
  • : 脈名詞1. (動脈和靜脈的統稱) arteries and veins2. (脈搏的簡稱) pulse 3. (像血管的組織; 連貫成系統的東西) vein
  1. He had eleven children, all of whom were, almost from the moment they learned the alphabet, roped into the endless business of helping to sift through and alphabetize the several million slips of paper on which were recorded every twitch and burble of the language over seven centuries

    他有11個孩子,所有的孩子差不多從學會字母那一刻起,就被這無休止的生意給纏住了- - -幫著篩選七百萬個紙片,並按字母表的順進行分類,這些紙片記錄了七個多世紀所使用的所有字的來龍去
  2. Second, this paper analyzes the time - frequency distribution of the clutter from airborne pulse doppler radar ( pdr ). the side - lobe clutter, which is the main factor to influence the pdr, is analyzed and calculated. based on the simulation of typical geometry of the land, we analyze and discuss the side - lobe clutter and concluded that the dft of can be considered as the phase of the coho

    並且根據各種典型地貌的近似模擬,從統計特性上和頻率域上對沖多卜勒雷達的旁瓣雜波進行了分析討淪,還得出沖多卜勒雷達的dft可以近似地看作相參積累,並在程的編制中利用了這一個結論。
  3. That is, vibration caused by the first part of the command signal is canceled by vibration caused by the second part of the command. input shaping is implemented by convolving a sequence of impulses, an input shaper, with any desired command

    輸入成型通過把參考輸入信號和一系列沖進行卷積,得到成型輸入信號,而成型輸入信號作用於控制對象,其中這列就是輸入成型器。
  4. Not only was the pattern of recordings along the artificial lateral line similar to the pattern recorded from the nerve cells of a real fish, but the computer could also decipher it to follow the source of the pulse as it moved along different paths

    結果顯示不僅該系統記錄的圖形與從真正的魚身上的神經細胞所記錄的圖形相似,而且配套的電腦程還能通過對記錄圖形的解讀來追蹤沿著不同路徑移動的沖水波的源頭。
  5. The leaf venation structure of piper linn. and its taxonomic implication in south china

    華南胡椒屬植物的脈序結構及其在分類中的意義
  6. It uses binary counters for the conversion of the multiplicand from parallel to pulse-train form.

    它採用二進制計數器以把被乘數由并行形式轉換成列形式。
  7. In this paper, the radiolocation technique and principium of ofdm in the cell - communication system were introduced firstly, and sensitivity of ofdm system to synchronization was analyzed. then, two methods of timing synchronization based on the cyclic prefix and pilot sequence were introduced, and a novel timing synchronization method based on pilot sequence was presented, which provided a correlation peak with pulse shape

    由於ofdm系統中的定時同步要求和無線定位中的測時測距在本質上是一致的,所以本文緊接著分析了基於循環前綴和導頻列的兩種定時同步方法,並提出了一種新的基於導頻列的具有沖形狀相關峰的定時同步方法。
  8. Venation is a character sometimes used in taxonomy

    分類學中常將脈序作為一個分類標志。
  9. Venation the distribution of veins ( vascular strands ) in a leaf

    脈序:是葉片中各葉(維管束)的排列分佈狀態。
  10. 3. passive and active time - domain demodulation schemes were demonstrated based on a fiber bragg grating used as a tunable filter controlled by a piezoelectric stack, which was driven by an electrical sine wave signal. the measured strain applied on the sensor axially could be judged by observing the interval of the output between notches within a driving period in time - domain

    利用匹配濾波技術,分別採用無源和有源方式,藉助受pzt驅動的解調光柵,將待測應變信息變為時沖間隔的變化,利用常規的示波器觀測同一掃描周期中兩負沖在時域中間隔的變化來確定待測應變的變化。
  11. At first the merits and implementation of the digital pulse compression subsystem are introduced in this paper. then the characteristics of phase coded signals are discussed and the two classic binary phase codes ? ? barker code and m - sequence are dealt with in details in the following

    文中首先綜述了數字沖壓縮的優點及其實現方法,接著討論了相位編碼信號的特點,並詳細分析了巴克碼和m列這兩類典型的二相碼信號。
  12. In the send site, binary message sequence is modulated between pulse sequences, then took it into wireless channel

    發送端將二進制信息列調制于列的間隔中,然後送入無線通道。
  13. Backed up by the soplat theory based on particle kinematics, the second chapter of this paper presents with analysis and simulation of several single observer passive measurement models, which uses such relative movement parameters as bearings changing rates and centrifugal acceleration information on the basis of bearings measurements. in the third chapter, the observability of location respectively using bearings and its changing rates information and centrifugal acceleration information is analyzed, and its observable condition is got. the fourth chapter puts forward the modified covariance extended kalman filtering ( mvekf ) against the defect of traditional extended kalman filtering ( ekf ), whose performance is simultaneously compared in the chapter with the performance of ususal tracking algorithm such as ekf, mgekf, iekf by computer simulation

    在近年來提出的基於質點運動學原理的單站無源定位理論基礎上,本文第二章提出了幾種在角度測量的基礎上增加角度變化率及相對運動的離心加速度等運動學參數的單站無源測量模型,並對它們進行了分析和模擬;第三章分別對利用角度及其變化率信息定位和利用離心加速度信息定位的可觀測性進行分析並得到了相應的可觀測條件;第四章針對傳統擴展卡爾曼( ekf )方法的缺點,提出了一種修正協方差的擴展卡爾曼濾波( mvefk )方法,並將其和ekf 、 mgekf 、 iekf等常用的單站無源定位濾波方法進行了性能模擬比較;第五章通過引入雷達機動目標跟蹤方法和模型,提出了利用角度及其變化率對機動輻射源跟蹤的多級噪聲自適應方法和imm方法;第六章主要對角度變化率和離心加速度參數的獲取技術進行了研究,提出了幾種高精度測量列多普勒頻率變化率的方法。
  14. Three - dimensional motion estimation of coronary artery from single - plane cineangiogram sequences

    血管造影圖像列中冠狀動的三維運動估計
  15. In this article, firstly the background of the textile trade conflicts within sino - us or sino - euro are introduced, thus learn that how to discern and dodge the foreign trade risks, how to choose the appropriate investment projects have already become one of the most important questions for exporting companies on foreign trade affairs well - known as high investment and high risk. so the main text makes a risk analysis qualitatively and quantitatively on a textile - exporting trading company from three angles of statistic 、 game theory and portfolio theory, which is the main content that we studied. firstly, the statistic article adopts data of the transaction closing price of the textile clothing index in shenzhen stock exchange at the end of each quarter as well as several other kinds of data reflecting the macro - economic changes, performs an empirical analysis of these data according to the theory of co - integration test 、 granger cause test and impulse response function of time series in economitric, and learn that the impact to ti is more obvious by the economic index reflecting local commodity price level and economic prosperity degree home and abroad, as well as the impact degree and the time lag degree, and knows the macro - economic risks faced by textile business enterprises ; after that by the game theory angle we analyze exactly the managing risks faced by one textile export corporation named beauty. from the game expansion chart the system arrangement between censor ways by exportation goal countries and exporting strategies by the exporting enterprises has been analyzed. involving the benefit assignment between them both the limited rounds and infinite rounds negotiations of cooperation games have been studied, and then country responsibility and the enterprise managing risks on foreign trade affairs and so on have been analyzed exactly ; in order to realize the investment multiplication in the certain degree to disperse the risk, the

    本文首先介紹了中美、中歐紡織品貿易爭端的來龍去,由此可知在涉外貿易這種以高投入、高風險著稱的行業里,如何甄別和規避外貿風險、如何選擇合適的投資項目已經成為外貿企業的首要問題。因此,正文分別從統計學、博弈論和投資組合三種角度對涉外紡織品貿易公司風險進行了定性和定量的分析,這也是本文的主要研究內容。首先,統計學篇選取了深圳證券交易所行業分類指數?紡織服裝指數( ti )每一季度末的交易收盤價和若干種反映宏觀經濟變化的指標,利用計量經濟學中時間列的協整檢驗、 granger因果檢驗和沖反應函數等理論做實證分析,從而得知反映國內物價水平和國內外經濟景氣程度的經濟指標對紡織板塊上市值的沖擊比較明顯,且可知沖擊程度和時滯度,進而分析出涉外紡織企業所面臨的宏觀經濟風險;接著,從博弈論的角度具體分析一家紡織品出口公司( beauty )的外貿活動所面臨的各種經營風險,該篇從博弈擴展圖入手,分析了出口目的國審查方式與本企業出口策略之間的制度安排;並圍繞雙方的利益分配,研究了有限回合和無限回合合作談判博弈,然後具體論述了國家責任和企業涉外經營風險等問題;在一定程度上為了實現投資多元化來分散風險的目的,投資組合篇從經典的markowitz模型著手,在一些特定條件的限制下,給出了一個相應的投資組合模型。
  16. ( 2 ) design and optimize the pulse compression program of 4 pieces of adsp21160 in the processing unit and the program of single piece of adsp21160 in the interface unit

    ( 2 )沖壓縮系統處理單元4片adsp21160沖壓縮處理程的優化和介面單元單片adsp21160的程設計。
  17. 2. design the pulse compression program of one piece of adsp - ts203. complete the program and optimization of radix - 2 fft independently, which meets real - time processing

    2 .基於一片ts203的沖壓縮處理單元的程設計,獨立完成其中基2 - fft的編寫及其優化,滿足系統實時性的要求。
  18. Pspice models for fcg, pulse transformer, electric exploding wire opening switch ( eeos ), blumlein pulse forming line, and virtual cathode osillator ( vircator ) are created

    利用pspice程,創建了包括沖變壓器、電爆炸絲( eeos ) 、 blumlein傳輸線、虛陰極振蕩器( vircator )和fcg等在內的電路元件模型庫。
  19. Conclusion : it is highly value to diagnosis of fcht ) that heart of fetus were examined by ultrasonography of sequence display gestation age upword 21 weeks

    結論: 21孕周以上常規採用順顯示法(四腔切面五腔切面左室長軸切面大動短軸切面)進行胎兒心臟超聲檢測對先心病的診斷具有重要價值。
  20. The study has completed the design of two - phase inverter and made up of the two - phase inverter - motor system for experimental use it is a variable frequency adjustable speed system with a open - loop control of rotational speed, which consists of voltage - controlled oscillator circulating assign device inverter circuit and two - phase induction motor a accurate mathematical model is set based on the whole system, and simulator program of dynamic and steady condition is established, which is used to calculate the dynamic and steady performance by kron and symmetrical coordinate converter by simulator calculation and experimental research with specific parameter of the system, a comparison is made between predicted and experimental characteristics, experimental measurements are shown to compare closely with corresponding theoretical result it is compared with some variable frequency adjus table speed system comprising inverter and single - phase induction motor from the system efficiency torque pulsation and the effect of two - phase inverter capacitance based on the conclusion, harmonic cancellation pulse width modulation control of a two - phase inverter - fed induction - motor drive system is researched, which cancelled the low harmonic and improve the system performance

    通過對電機的kron變換和對稱分量變換,建立了系統較精確的數學模型,編制了系統動態及穩態運行的模擬計算程分別計算系統的動態和穩態性能。通過對系統的具體參數進行了模擬運算和實驗研究,實驗和模擬結果進行比較,說明實驗和理論較為一致,並從系統效率、轉矩動及兩相逆變器電容的影響等方面與各種逆變器和單相異步電動機組成的變頻調速系統加以比較。在此基礎上,對兩相逆變器供電-異步電動機系統使用諧波抑制pwm控制進行了研究,由於減少了低次諧波,改善了系統性能。
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