自外差 的英文怎麼說

中文拼音 [zìwàichā]
自外差 英文
self heterodyne
  • 自 : Ⅰ代詞（自己） self; oneself; one s own Ⅱ副詞（自然;當然） certainly; of course; naturally; willin...
  • 外 : Ⅰ名詞1 （外面） outside; external side 2 （外國） foreign country 3 （以外） besides; beyond; in ...
  • 差 : 差Ⅰ名詞1 （不相同; 不相合） difference; dissimilarity 2 （差錯） mistake 3 [數學] （差數） differ...
  1. They are jinfo mountain in nanchuan county ( natural protection section ), wuling mountain in qianjiang county ( national emphases forest demonstration county which forest cover rate is beyond 50 % ) and zhongliang mountain in beibei county ( artificial destruction is very grave ). some main land use patterns i. e. woodland, garden, infield, abandon infield, shrub and grassplot are selected in those three sample sites. four aspects on soil fertility index of karst environment under different land use patterns in these three sample sites, are revealed in this paper, by using the field test, indoor measure and analysis, outdoor experiment and field investigation, and the knowledge and technique of soil, ecology, physics and chemistry etc. they are physical characteristic ( effective soil thickness, organic layer thickness, soil texture, water - stable aggregate and soil water etc. ), chemical fertility ( organism, omni - n, omni - p, omni - k, alkali - nitrogen, available p, available k and rapid available k etc. ), soil animalcule ( bacteria, fungi, actinomyces and their grosses ) and soil - seed - pool ( plant community diversity index ) in karst ecosystem

    本研究以重慶市的南川金佛山（自然保護區） 、黔江武陵山（國家重點退耕還林示範縣，森林覆蓋率50以上）和北碚中梁山（遭人為破壞嚴重）典型巖溶區為對象，選擇了幾種重要的利用方式，包括林地、果園、耕地、棄耕地和灌草坡，採用野外巖溶生態調查和室內試驗測量分析相結合的方法，以不同土地利用方式巖溶土壤肥力為重點，對不同土地利用方式土壤肥力特徵進行量化分析，找出巖溶土壤肥力差異的主要方面及其根本原因，論文主要從土壤剖面物理退化指標（有效土層厚度、有機質層厚度、質地、團聚體、水分含量等） ，化學肥力退化指標（有機質、全n 、全p 、全k 、堿解n 、速效p和速效k等） ，樣地土壤微生物指標（細菌、真菌、放線菌數量及總量）以及樣地土壤種子庫植物群落多樣性等4個方面對重慶典型巖溶區的土壤肥力特徵進行了較為詳細的分析研究，為巖溶地區士壤資源的合理利用及結構的調控管理提供依據。
  2. Taxus chinensis vsr. mairei population is very oblivious from seeding stage to mature tree stage. the patterns were consistant with the ecological and biological characteristics of form. taxus chinensis var. mairei which were valuable and rare and in severe danger. in this paper, logistic model and liu - logistic model were proposed to approach the growth dynamics of tree basal area of form. taxus chinensis var. mairei population

    南方紅豆杉幼苗表現為較強的聚集分佈，除與種子的散布有關外，生境條件的差異是重要原因之? ，其它發育階段表現為明顯的隨機分佈，表明它在自然群落中分佈的概率很小，反映了南方紅豆杉珍稀瀕危的生態生物學特性和特徵。
  3. Such extreme organs include kidneys from donors aged over 70, from those whose hearts had stopped beating and thus deprived the organ in question of oxygen ( as opposed to those who had suffered brain death in which their hearts kept beating ), organs in which more than 30 % of the filtering units were not working and those that had been out of body for more than 30 hours

    這些極差的器官包括來自於年齡在70歲以上的捐贈者，或來自於死於心臟停止跳動因此器官供氧不足的死者（與死於腦死亡但心臟保持跳動的死者情況相反）的腎臟，另外還包括30 %的過濾單元都不能工作和取出體外超過30小時的器官。
  4. Then there are the luncheonette and the automat, which are somewhat like cafeteria.

    此外還有小型便餐館及自助食堂，它們都和自助餐館相差無幾。
  5. Internalization may also come about spontaneously by the merger of two units inflicting large externalities upon one another.

    當兩個有著巨大的相互沖突的外差因素的單位合併時，內部化也可能自發地產生。
  6. Traditional sports and folk sports are of great variety, which may be used as pe resources. but such contents are absent in the pe textbooks. so it is natural that the pe classes can not arouse interest of students ; the number of the playground and sports apparatus can not meet the standard. neither can they satisfy the demand of students ; it ' s practical to take advantage of the local geographical resources in pe curriculum ; extracurriculum and after - school activities can not meet the demand of students, which should be developed and utilized to a greater extent ; the structure of pe teachers is far from satisfactory

    結果顯示，甘肅少數民族地區小學體育課程資源存在著課程內容中民族傳統體育和民間體育活動項目豐富，然而教材內容沒有考慮地方和實際情況，很難引起學生的興趣；各級各類學校體育場地、器材的要求相差甚遠，現有體育場地器材都無法滿足教學要求和學生的體育需求；自然地理財富作為一種體育課程資源來開發很具有價值和實際意義；課外體育活動和校外體育活動還不能滿足學生的需求，尚須大力開發和利用；體育師資結構不合理，學歷結構偏低，且相當一部分是民辦教師轉正等問題。
  7. Among the internal and external factors concerning dividend policy, the tax advantage of capital gains over dividend income is an important one that should affect both corporate considerations and investors " demand for dividends

    在與股利政策有關的諸多內外因素中，稅收效應是影響股利政策的重要因素之一。自從1967年farrar和salwyn提出稅差理論以來，有關股利政策稅收效應的理論和實踐研究得到了深入拓展。
  8. In normal greenhouse condition, coda - transgenic wheat lines ( to ) had the same plant morphorlogy and pollen i2 - ki staining rate as untransformed control plant. after treating with 300 mm of 5 - fc, however, changes in configurations of spikelet, floret and anther have been observed in the transgenic lines but not in the control, and 50 % gus - positive lines displayed outside - opened glume, abnormal stamen, smaller and thinner anther, shorter filament, and failure of selfing. in parts of 5 - fc - treated transgenic lines, the pollen staining rate by i2 - ki was much lower than that of untransformed control

    溫室栽培的轉基因小麥苗（ t _ 0 ）未噴5 - fc處理時植株外部形態和花粉碘-碘化鉀染色的著色率與未轉基因的對照沒有差異；用300mm的5 - fc處理后，發現有50 gus陽性株系與對照有明顯的區別，表現為小穗穎殼外張，花絲短縮，花藥發育不良，較小、黃白色且花粉粒少，自花不授粉，無外來花粉授粉則不結實。
  9. In order to improve the existing pr adaptive optical heterodyne detection system ( praohds ), a new praohds is proposed based on sppc and mppc coexistence. the experimental study of the system is completed by equal amplitude ar + laser beams, poorly coherent equal amplitude solid - state laser beams and high speed amplitude - modulated solid - state laser beams through distorting media. experimental results indicate that the new system is applicable

    為了改進現有的光折變自適應光外差探測系統（ praohds ） ，本文利用sppc和mppc同時共存的特性，提出了一種新型的praohds ，並利用ar ~ +等幅激光、相干性較差的固體等幅激光以及固體高速振幅調制激光對新系統進行了畸變光束的自適應光外差探測實驗研究，結果證明了新系統在實際應用中的可行性。
  10. The high - intermediate - frequency superheterodyne structure with twice conversions is used. three cascaded agc units applies in the receiver system, one of them is used as the choice, for realizing a high dynamic range while the linearity of the system is well guaranteed

    系統採用了兩次變頻超外差式結構設計，第一中頻為高中頻。另外系統還包含了三級自動增益控制單元，其中一級agc作為選項，實現了較大的動態范圍，並且整機的線性度也得到了保證。
  11. This design keep the twice frequency transform and the superheterodyne structure in analog receiver, and use programmable direct digital synthesizer ( dos ) in rf section. use this method, we can not only inherit the advantage of high sensitivity and high selection in traditional design, but also improve the automation of the equipment

    該方案保留了原模擬接收機二次變頻的超外差結構，在射頻前端利用了可編程的數字頻率合成器（ dds ） ，這樣既繼承了原接收機的高靈敏度，高選擇性的優點，又提高了它的接收機自動化特性。
  12. In operating process of systems, besides the external randoml disturbance from the, also influence also comes from inside as parameter changing, in order to cope with this two kinds of uncertainties, a minimization variance control strategy based on innovations is proposed rind the analytic solution of this suboptimal control is obtained in this paper

    摘要系統在運行過程中，除了受到來自外界的隨機干擾外，還受到了諸如內部參數引起的不確定性的影響，為對付這兩種不確定性，採用雙態控制方法，提出了基於新息的最小方差控制策略，獲得了該次優控制律的解析解。
  13. More, this paper discusses some important performance parameters of the coherent self - heterodyne botdr system, such as dynamic ranges, spatial resolution, minimum detectable change

    在此系統基礎上，本文討論分析了相干自外差探測系統以及該botdr系統的動態范圍、空間解析度、最小可探測溫度/應變變化量等重要性能參數。
  14. Based on this, we bring forward a availability and viable distributed fiber sensing for temperature and strain system that based on spontaneous brillouin scattering, coherent self - heterodyne botdr, and done part experimental study

    在此基礎上，提出了一種有效可行的基於布里淵散射的分散式光纖溫度/應變傳感系統? ?相干自外差的布里淵散射分散式光纖傳感系統，並完成了部分實驗研究。
  15. At the same time, it uses a frequency translator to obtain a frequency shift, which is equal to the brillouin frequency in fiber. then the detecting pulsed light and the cw reference light can coherent. this method greatly improved the system ’ s sensitive and signal to noise ratio ( snr )

    同時在探測光路中引入一個光移頻環路，使探測光移頻后再經光纖中布里淵頻移，其後向布里淵散射光頻率與參考光束大致相當，可進行相干自外差探測，大大提高了系統的探測靈敏度以及系統的信噪比。
  16. Be different with other botdr systems, the coherent self - heterodyne botdr system uses only one consecutive laser. the light from consecutive laser is divided into two beams, the detecting light and the reference light, by a coupler

    與其他的botdr系統分別使用兩臺激光器不同，自相干外差的布里淵散射分散式光纖傳感系統採用一臺激光器，經耦合器分為兩路光束? ?探測光和參考光束。
  17. After discussing this kind of filter in this paper in detail, the grads algorithm in time domain and frequency domain is set up when the change of frequency is slow, so it means the algorithm only process the narrowband interference what it changes slowly

    論文對數字自適應外差濾波器進行了詳細的研究，建立了自適應外差濾波器的時域和頻域的梯度演算法，該演算法的推導使用了外差頻率變化緩慢的假設，這意味著該濾波器只能夠處理慢變的窄帶干擾。
  18. According to the characteristic of digital adaptive heterodyne filter and the conception of interference counteraction, the paper presents a new structure to enable the filter track the interference signal precisely and control the width and depth of notch. through simulation, it is demonstrated that the new structure can suppress one or more interference signals and the filtering operation has little influence on signal spectrum

    論文利用數字自適應外差濾波器的特點，運用干擾抵消的概念，提出了一種新的結構，能使濾波器精確跟蹤干擾信號，並能控制陷波的寬度和深度，經模擬驗證，該結構的濾波器能較好的抑制一個和多個干擾，同時濾除干擾后對信號頻譜的損害較小。
  19. Digital adaptive heterodyne filter adopts the heterodyne - modulation conception, which makes the filter work in low frequency and lessens the complexity of design

    數字自適應外差濾波器運用外差調制的概念，使濾波在低頻率處操作，從而降低了濾波器的復雜程度。
  20. " however, the fundamental reasons behind the currency appreciation still remain the same : pressure from the foreign exchange reserves and mounting trade surplus, " the economist said

    他說： "但是，人民幣升值的根本原因主要還是來自外匯儲備的壓力和不斷擴大的貿易順差。
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