置換原子 的英文怎麼說

中文拼音 [zhìhuànyuánzi]
置換原子 英文
substitutional atom
  • 置 : 動詞1. （擱; 放） place; put; lay 2. （設立; 布置） set up; establish; arrange; fix up 3. （購置） buy; purchase
  • 換 : 動詞1. （給人東西同時從他那裡取得別的東西） exchange; barter; trade 2. （變換; 更換） change 3. （兌換） exchange; cash
  • 原 : Ⅰ形容詞1 （最初的; 原來的） primary; original; former 2 （沒有加工的） unprocessed; raw Ⅱ動詞（原...
  • 子 : 子Ⅰ名詞1 （兒子） son 2 （人的通稱） person 3 （古代特指有學問的男人） ancient title of respect f...
  • 置換 : displace; substitute; supersede; substitution; replacement; permutation; transposition; transposi...
  1. Deoxy sugar a sugar in which oxygen has been lost by replacement of a hydroxyl group ( oh ) with hydrogen ( h ). the most important example is deoxyribose

    脫氧糖：羥基被氫原子置換導致失去氧的一類單糖。最重要的脫氧糖就是脫氧核糖。
  2. The user can input the catenary material needed for its inspection expediently and accurately with the source material input subsystem. the real - time processing subsystem can incept, transform, compose, display and save the data transmitted from the inspection subsystem of the high - speed catenary inspection vehicle. the result analysing subsystem can display, save, contrast, report and mimeograph in many forms the inspection results, according to the many kind of condition choosed by the user

    原始資料錄入子系統可以讓用戶直觀、快捷、正確地輸入檢測接觸網所需的接觸網原始資料；檢測數據實時處理子系統能及時、正確地接收、轉換、合成、顯示、存儲前置系統傳送的檢測數據；檢測結果分析子系統能按照用戶選擇的多種條件，以多種方式對檢測結果顯示、存儲、統計、對比、報表、列印和回放。
  3. The basic working principles and characteristics of srm will be described firstly in this paper, as well as its developing survey and researching directions. and then the srd system will be separated into several function parts to be introduced respectively in details : ( 1 ) to analyze the basic characteristics of the srm including electromagnetism, current and torque of every angle field of the rotor based on the subsection - linearized inductance characteristics of stator windings and several idealized supposes. ( 2 ) how to design and realize the h - bridge converter, and the method to use it ; ( 3 ) how to design and realize the controller based on dsp ( tms320f240 ) and the control strategies, as well as the program ; ( 4 ) to introduce the monitor program running in a pc, which is programmed by delphi

    本文首先介紹了srm的基本工作原理和特點以及srd系統發展概況和研究方向，然後以srd的功能構成為線索分部分進行介紹： （ 1 ） srm的特性及控制策略分析，在電感分段線性化等簡化條件下分析得出了各個轉子位置角度區間的電磁、電流和轉矩特性並分析了控制策略； （ 2 ）分析設計了h橋式功率變換器的設計和工程實現的方法，並設計了基於這種功率變換器的換相邏輯； （ 3 ）分析設計了以dsp為核心的控制器以及控制方法，並介紹了該控制器的軟硬體實現； （ 4 ）介紹了如何用delphi編制實現上位機監控程序。
  4. In this chapter, the method of bldcm rotor position detection is first discussed. then the principle and algorithm of bemf zero crossing point detection is explained. in succession, the chapter dissertates the software realization of the bemf zero crossing point detection algorithm, the software disturbance filter and the modification of phase displacement, and the software realization of commutation point

    在這一章中，先簡述了無刷直流電機的轉子位置器檢測方法；然後論述了反電動勢過零檢測原理和演算法以及該演算法的軟體實現、軟體濾波和相移修正、換相點的軟體實現；最後對軟體開環換相起動策略作了詳細論述。
  5. Patients in the control group were treated with comprehensive therapy including symptomatic supportive treatment, antiinfective therapy and artificial liver plasmapheresis etc., while those in the treated group were orally taken szrd additionally. patients condition of sleeping and changes of total bilirubin prothrombin activity, tumor necrosis factor and interleukin1 il1 were observed before and after treatment, and the adverse reactions were observed as well

    對照組採用對癥支持抗感染人工肝血漿置換等綜合治療，治療組在此治療基礎上，加用酸棗仁湯口服治療2周，觀察兩組患者睡眠情況，檢測治療前後血清總膽紅素tbil凝血酶原活動度pta腫瘤壞死因子tnf和白細胞介素1 il1等指標，並觀察藥物的不良反應。
  6. Plasma characteristics of a rf ion source are investigated by emission spectroscopy. the spatiotemporal spectral line intensities of the first three atomic lines in hydrogen bahner series ( = 656. 28, 486. 13, 434. 05nm ) of rf ion source plasma, are measured with calibrated optical multichannel analyzer ( oma ). some plasma parameters, including electron temperature, hydrogen atom density and hydrogen ion density, are calculated and analyzed using partial local thermodynamic equilibrium ( plte ) theory and abel transform

    實驗採用絕對定標后的光學多道分析系統（ oma ）測定了離子源等離子體不同時間和空間位置的氫原子巴耳末譜線系中前三條譜線（ = 656 . 28 ， 486 . 13 ， 434 . 05nm ）的強度，並採用plte的理論和abel變換方法，計算出了高頻離子源等離子體的電子溫度、氫原子濃度、氫離子濃度等參數在放電的不同階段和徑向分佈情況，並進行了簡要分析。
  7. The working principle, operation cost, advantages and the application of the miex - doc magnetic ion exchange water treatment system are described in detail with its key technology herein

    摘要通過詳細闡述miex - doc離子置換水處理系統的工作原理、運行成本、先進性及應用情況，對「麥克氏」離子置換水處理技術進行了全面介紹。
  8. On - line fi displacement sorption preconcentration coupled with faas for trace sliver analysis in geological materials

    流動注射在線置換吸附預富集與火焰原子吸收聯用分析地質樣品中痕量銀
  9. Advanced fpga technology is introduced to improve the integration of digital circuits, and all digital circuits in the original module are integrated in the fpga chips, which could not only reduce the cost, but also improve the reliability and measurement precision of the circuits. high speed digital signal processor ( dsp ) is selected as the coprocessor instead of scm ; it can receive all kinds of commands sent from vxi, analyze and execute the commands, harmonize each section of the module and process the data. higher - conversion - speed comparator chip is adopted to convert the input signals being measured into square waveform signals which could be identified by fpga chip ; it can expand the measurement range of frequency dramatically

    本文在原有vxi總線四通道計數器模塊的設計基礎上，通過對原模塊缺陷的分析，採用一些新的技術和新的電子器件來重新設計該計數器模塊:採用最新的fpga技術來提高數字電路的集成度，將原模塊中的所有數字電路全部集成在fpga晶元中，這樣不僅能節約成本，還能提高電路的可靠性和測量精度;採用高速的數字信號處理器（ dsp ）取代原有的單片機作為協處理器，來接收vxi發來的各種命令，分析命令、執行命令、協調模塊各部分的工作以及對數據的處理;採用轉換速率更高的比較器晶元將輸入的被測信號轉換為fpga晶元能夠識別的方波信號，能極大提高測量頻率的范圍;採用d / a轉換晶元和隔離運算放大器得到隔離通道所需的比較電平，該比較電平值能夠根據實際需求進行設置，能增強模塊的使用靈活性。
  10. According to the seismic convolution model, a kind of matched filters in time - scale domain is designed for echo signal detection of ground penetrating radar ( gpr ) and implemented in this paper, which is applied to detect the location and amplitude of single reflection wavelet in receiving signal through continuous wavelet transform

    摘要根據地震褶積模型，設計並實現了應用於探地雷達回波信號檢測的時間尺度域匹配濾波器，利用小波變換的時間定位性和尺度伸縮性，檢測出雷達接收信號中單個反射子波的位置與強弱信息，利用已知的雷達發射子波模型還原回波信號，達到了濾除噪聲、最佳接收的目的。
  11. The constitution, interface and control principle of main circuit, rectifier control module, inverter control module, generator ' s rotor speed and rotor position measuring module, information exchange module are discussed. specially, the methods of implementing signals level match in multi - voltage system, synchronizing with pc in parameters measurement and measuring rotor speed and rotor position with high precision are explained in detail

    文中討論了主電路、整流器控制模塊、逆變器控制模塊、電機轉速和轉子位置測量模塊以及信息交換模塊的組成、介面方法和控制原理，詳細說明了系統中實現不同電壓等級間信號電平匹配的方法、系統與上位機進行同步參數測量的方法以及實現高精度電機轉速和轉子位置測量的方法。
  12. In order to protect environment and save energy sources, please place used four towels ( towel, bath towel, hand towel, and terra towel ) to the onginal position if no change is required, or put them into the basket under the table - board if required to change

    為了保護環境，節約能源，用過的四巾（毛巾、浴巾、方巾、地巾）如不用更換，請放回原來位置；如需要更換，請放在臺面下的籃子里。
  13. " valence number of bonds ( see bonding ) an atom can form. hydrogen ( h ) always has valence 1, so other elements ' valences equal the number of hydrogen atoms they combine with.

    原子價:元素的一個原子能夠結合其它原子的數目。元素的特徵價數是以該元素一個原子可結合的氫原子數或可從一化合物中置換出的氫原子數來表示。
  14. The high at content of the native gene is very difficult to express, we designed a new he gene by reverse the codon used for e. coli and yeast, then, the he gene was cloned into the expression vector pqe - 60

    本研究嘗試了其保護性抗原基因在大腸桿菌及酵母中的表達。天然bont a的hc片段基因中at含量高達76 ，其通過同義密碼子置換人工合成hc段基因，將at含量降到57 。
  15. After the image lifting wavelet transformation, its coefficients have some characteristics, for example : the frequency compression characteristic, namely the primitive image energy majority of gathers to the low frequency sub - belt ; spatial compression characteristic, namely high frequency sub - belt energy majority of centralisms in primitive corresponding and so on image edge, outline position ; the coefficient distribution similarity, namely in the

    經提升小波變換后，其系數具有如下特性:頻率壓縮特性，即原始圖像的能量大部分聚集到低頻子帶;空間壓縮特性，即高頻子帶的能量大部分集中在原始圖像的邊緣、輪廓等對應的位置;系數分佈相似性，即同一方向上各級子帶系數幅值分佈大體一致。
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