高度增益 的英文怎麼說
中文拼音 [gāodùzēngyì]
高度增益
英文
height gain-
Directed on the present situation and existing problems in boosting beef cattle industry based on the yellow cattle improvement in china, the review indicated that several relationships, such as integration of individual households and large scale cattle farms, integration of yellow cattle improvement, crossbreeding, breed conservation and utilization, integration of high grain diet intensified fattening and low grain diet economic fattening, should be handled properly ; and the requirements of profitable cattle industry for increasing reproductive survive rate, using hybrid vigor and improving the weight gain, the main factors affecting economic return of large scale cattle farms and the technology level improvement in cattle industry were duiscussed as well
本文就近來我國以黃牛改良為特點的肉牛業蓬勃發展現狀與存在問題，指出應處理好養牛經營形式千家萬戶與規模牛場相結合、黃牛肉用與肉役兼用相結合、黃牛改良選育與雜交、保種及利用相結合、高精料強度肥育與低精料適度育肥相結合等幾個問題；並就提高養牛經濟效益對提高繁殖成活率、充分利用雜種優勢、提高日增重的要求和影響規模牛場經濟效益的主要因素及如何提高養牛科技水平等問題提出探討。The killing effect on oncomelania hupensis by lixivium of pterocarya stenoptera, nerium indicum, rumex japonicus and their mixture was studied. differences of the snails mortality were studied also. the three kinds of plant material could kill the snail effectively both in spring and in autumn. but the mortality was different when the experiment is done in different seasons or with different lixivium. the effect in spring was better than that in autumn. n. indicum was the most effective among the three kinds. the effect by mixture was better than that by unitary material, and the effect by the mixture of the three kinds was better than that by two kinds. the variance analyses showed that the experiment could be modified, and some ingredients concentration in mixed lixivium could be reduced. the experiment was valuable in enhancing the power of killing the snail and saving plant material
對楓楊、夾竹桃和土大黃以及它們的組合水浸液的滅螺效果作了比較研究，結果表明: （ 1 ）滅螺效果均隨水浸液濃度的增高而增強; （ 2 ）這3種植物材料及其組合水浸液的滅螺效果都是春季比秋季好; （ 3 ）組合水浸液的滅螺效果比單一植物材料水浸液的滅螺效果好; （ 4 ）方差分析的結果說明植物材料組合水浸液滅螺在保證滅螺效果的前提下，還可以適當降低組合水浸液中的濃度.以上結論對提高植物材料的滅螺效率和節省植物材料的使用量有著重要的意義，同時也為組建植物滅螺群落提供了有益的參考Ion detection technique has been successfully used in the study of rydberg states of na2 by pulse optical - optical double resonance. high - lying rydberg states near ionization limit have been observed and high sensitive and high gain spectra have been obtained. this technique is very useful for molecular spectroscopy
本文首次實現了鈉分子體系中離子探測脈沖激光光譜，研究了鈉分子電離限附近的高里德堡態，獲得了高靈敏度和高增益的光譜，拓寬了分子光譜研究領域。This thesis was divided into eight chapters, and the main results and innovations obtained here can be summarized as follows : ( 1 ) the physics model of tsrs in frequency conversion crystals has been built up firstly. based on quantum - mechanical viewpoints and the following physical processes and parameters : the two - photo interaction of light with matter, paraxial diffraction of stokes, langevin noise sources, reflection at the faces and the edges of crystals, gain coefficient, beam aperture, pulse width and fluence of 3, the physics model of tsrs in kdp and kdp crystals acting as high - fluence frequency convector and the paraxial operator maxwell - bloch - langevin equations have been built up
全文共分八章，取得的主要成果及創新點如下： （ 1 ）首次建立了諧波轉換晶體的tsrs物理模型本文根據量子力學原理，在考慮如下物理過程和參量的基礎上：光與物質的雙光子相互作用； stokes光的傍軸衍射； langevin （郎茲萬）噪聲源；晶體表面反射和端面反射；增益系數、光束口徑、脈寬和三倍頻光能量密度，推導出高通量激光在kdp和kd ~ * p諧波轉換晶體中的tsrs物理模型和空間上的近軸算符maxwell - bloch - langevin方程組。In actual radar antenna design several thousand elements could be used to obtain a high - gain antenna with a beam width of less than two degrees
實際的雷達天線設計為擁有數千個單元能夠獲得高增益使波束寬度小於2度。Research for the relation between small signal gain coef ficient and pump - energy density of high - power off - axis two - pass amplificati on
離軸高功率雙程放大系統中小信號增益系數與泵浦能密度關系研究( 1 ) effects of externally applied electric fields on photorefractive two - beam coupling are analyzed. theoretic dependence of the intensity gain factor on applied field e0 in sbn : 60 is presented. and the experimental results obtained in two sbn : 61 : cr crystal samples with different dopant concentration show clearly that for properly applied fields, a larger f can be achieved effectively than that obtained with no field applied
由兩塊不同摻cr濃度的sbn 61 cr晶體得到的實驗結果同時表明，適當的外電場作用能夠有效提高晶體的二波耦合增益，並且，外電場的作用使晶體的響應速度大大提高，而晶體的最佳耦合角與外電場之間沒有明顯的依賴關系。To overcome this problem, the author researching from the core of active disturbance rejection control theory " fal function ", having the advantage of : small errors, large gains ; big error, the small gains character, designs a nonlinear pid gesture controller. simulation results showed that the design of nonlinear pid controller shortening the small satellite gesture catch time and improving the attitude control precision
為了克服這個問題，本文從自抗擾控制理論中的核心「 fal函數」出發，基於fal （ e ， ， ）函數具有:小誤差，大增益;大誤差，小增益的特性，設計了一種非線性pid姿態控制器，比較好的縮短了小衛星姿態捕獲時間，一定程度上提高了姿態控制的精度。The result shows that the pbg structure has obvious character of forbidden band at the suitable size, and can be designed to good performance microwave filter. the pbg structure have the character of high resistance, that can reinforce the forward radiation, and reduce the backward radiation, increase the directivity, improve the gain and ameliorate the performance of the antenna. in addition, the pbg structure can also greatly increase the isolation and significantly decrease the coupling between the antenna elements
研究結果表面，取合適的尺寸時， pbg結構具有明顯的禁帶特性，可以設計成性能良好的微波濾波器； pbg結構具有高阻特性，把這種特性用於微波天線時， pbg結構可以加強前向輻射，減小後向輻射，增大天線的方向性系數，從而提高天線的增益，改善天線的性能，另外， pbg結構還可以大大提高天線單元之間的隔離度，顯著減小天線單元間的耦合。In this thesis, wide - fov ( field - of - view ) optical systems with optical gain based on fov and optical gain of laser detection and warning optical system are studied. it can solve the problem of wide fov matching with small photosensitive surface, enhance the power received, increase detecting sensitivity, reduce the power of laser and decrease the cost of laser accordingly
本文正是針對上述問題，從激光輻射探測光學系統的視場和光學增益出發，研究寬視場有增益光學系統，解決大視場和小光敏面匹配的矛盾，增強接收到的光功率，提高探測靈敏度，降低對激光輻射源功率的要求，從而降低相應激光器的成本。The merits are : ( i ) earlier grinding and earlier annual entry to the market of new sugar products ; ( ii ) prolonging the grinding period and enhancing the work productivity and the effective utilization of equipment ; ( iii ) solving the conflict of lacking grinding capability with traditional concentrated harvest of raw sugarcane ; ( iv ) lower the quantity and quality loss from freeze injury of raw cane ; and ( v ) proper income increase of sugarcane growers due to the increases of both sugarcane yield and price
采納10月開榨配套技術可以使我國甘蔗糖廠提早10月開榨，使新糖提早上市搶市場，一定程度上克服我國糖廠榨季及產品相對集中的問題；延長榨季，提高設備利用率和勞動生產率，提高蔗糖業經濟效益；可一定程度上解決原料蔗產量增長過快與糖廠壓榨能力相對不足的矛盾；減輕可能的霜凍危害造成的原料蔗產量和質量損失。可以使蔗農通過單產提高和蔗價適度增加而提高收入。Control effect with high accuracy and stability on hydraulic shovel is achieved by feedback plus feedforward, nonlinear compensation, state feedback and gain scheduling on conditions
通過採用反饋加前饋控制、非線性補償、狀態反饋和根據狀態對增益編排，獲得了對液壓正鏟挖掘機的高精度控制效果和高穩定性。However, over a long period of time our system of maritime administration and law enforcement at sea is extremely dispersed. the existing marine forces especially law enforcement at sea cannot meet the increasing requirements of defending state sovereignty and marine rights
然而長期以來，我國海洋行政管理體制和海上執法體制高度分散，現有的海上力量尤其是海上執法力量，已無法滿足日益增長的維護國家主權和海洋權益的需要。On the base of studying imaging theory of lens, the imaging theory of laser confocal scanning microscopy was analyzed in detail in this paper, and the advancement of that the optical fiber was applied to the system was described ; on the base of completed the demonstration for whole project, the experiment scheme was designed ; the relationship between the main parameters of key devices and the resolution was deduced, and the requirements of coupling efficiency and vignetting effects to optical system was analyzed ; the design of optical system and the planar scanning controlling circuit was completed ; a new method was put forward to resolved the inherent non - liner scanning problem of the galvanometer scanner by using software liner controlling in circuit design, and the perfect planar scanning was realized ; at last the low noise, high multiple and non - distortion amplify circuit of photoelectric detector was completed
本文在透鏡成像理論的基礎上，系統、深入地分析了共焦掃描顯微成像的機理，論述了應用單模光纖的激光共焦掃描顯微成像系統的優點；進行了總體方案的論證，並設計確定了單模光纖激光共焦掃描顯微成像系統的總體方案；從理論上推導分析了解析度要求與試驗系統中相關器件主要參數之間的關系，分析了系統耦合效率和漸暈現象對光學系統的設計要求；完成了方案中光學系統和二維掃描控制電路的設計，並在電路設計中採用了用軟體解決檢流計式光學掃描器（振鏡）非線性問題的新方法，能夠實現較為理想的二維模擬掃描；完成了高增益、低噪聲和低失真的探測接收系統的設計和調試。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。The paper first reviews the research background and actuality of the filter " s design in china and other country, introduces the meaning of the project and the work of the paper, narrates the theory of the switched - capacitor network and the basic switch building blocks, analyses the related factors of the design of sc filter. such as the selection of the architecture, the trade off of the opamp " s gain, bandwidth, phase margin, slew rate and setting time, the effect of the switch " s on resistor, how to reduce the charge injection and the clock feed - through, the power consumption and the selection of the sampling frequency and so on
本文首先回顧了濾波器設計的國內外研究背景和現狀，介紹了本課題提出的意義以及本文的主要工作，論述了開關電容網路原理和基本開關模塊，分析了開關電容濾波器設計的相關因素：電路結構的選擇，對運算放大器設計中高增益、寬帶寬、相位裕度、轉換斜率和建立時間等的折中考慮，開關的打開電阻對電路的影響，開關電容電路中怎樣減少電荷注入和時鐘饋通，以及整個電路的功耗問題和采樣頻率的選擇等。On the one hand, the design uses low voltage cascode op framework to improve its gain ; on the other hand, it applies self - bias and cascode structure to the whole sensing circuit. by using the improved method, we have successfully obtained low power consumption, low offset, high linear and high psrr ptat current generator under low power supply
在電路設計上一方面改進運放結構，採用低壓共源共柵結構以提高其增益，另一方面整體傳感電路採用自偏置結構和共源共柵電流鏡結構，在低電源電壓下成功設計了低功耗、低失調、高線性度和高電源電壓抑制比的ptat電流產生電路。Based on these analyses, we see that the si - based quantum - dot laser has higher gain and differential gain, its threshold current is more lower and the threshold current is insensitive to temperature when si - based quantum - dot laser compares with normal semiconductor laser and quantum - well laser
分析表明，與普通激光器和量子阱激光器相比， si基量子點激光器有更高的增益和微分增益，閾值電流更低，閾值電流對溫度更不敏感。Compared with all kinds of mixer circuits and emphasized on improving linearity of the mixer, double balance current switch circuit has been chosen for mixer
對比分析混頻器的各種拓撲結構，從提高混頻器的線性度出發，折衷考慮功耗、線性度、增益等因素的影響，選取雙平衡電流開關電路作為混頻器的核心單元。Erbium - doped optical waveguide amplifier has received extensive attention because it has several merits, such as low - loss, high gain, small size, low facture cost, small index of noise, small polarization relativity and convenient for integration
摻鉺光波導放大器具有損耗低、單位長度增益高、體積小、成本低、噪聲系數低、很小的極化相關性，便於集成等特點，正受到越來越廣泛的關注。分享友人