時域反射器 的英文怎麼說

中文拼音 [shíyùfǎnshèqì]
時域反射器 英文
tdr time - domain reflectometer
  • 時 : shí］Ⅰ名1 （比較長的一段時間）time; times; days:當時at that time; in those days; 古時 ancient tim...
  • 域 : 名詞（在一定疆界內的地方; 疆域） land within certain boundaries; territory; region
  • 反 : Ⅰ名詞1 （方向相背） reverse side 2 （造反） rebellion 3 （指反革命、反動派） counterrevolutionari...
  • 射 : Ⅰ動詞1 （用推力或彈力送出） shoot; fire 2 （液體受到壓力迅速擠出） discharge in a jet 3 （放出） ...
  • 器 : 名詞1. （器具） implement; utensil; ware 2. （器官） organ 3. （度量; 才能） capacity; talent 4. （姓氏） a surname
  1. Time - domain reflectometry ( tdr ) : an impulse is transmitted into the loop

    時域反射器（ tdr ） ：一個脈沖發射給環路。
  2. At the initial stage of planar technique, b was employed as ideal diffusion impurity in base - region of npn si planar devices because of the match of its solid - solubility and diffusion coefficient in si with those of p in emission - region, and the good shield effect of sio2 film to b. but because of the relatively large solubility ( 5 1020 / cm3 at 1000 ) and the small diffusion coefficient, the linear slowly - changed distribution of acceptor b in pn junction can not be formed, which could not cater to the requirement of high - reversal - voltage devics. thereafter b - a1 paste - layer diffusion technology and close - tube ga - diffusion technology had been developed, while the former can lead to relatively large the base - region deviation and abruptly varied region in si, which caused severe decentralization of current amplification parameter, bad thermal stability and high tr ; the latter needed the relatively difficult pack technique, with poor repeatability, high rejection ratio, and poor diffusion quality and productio n efficiency

    在平面工藝初期，由於b在硅中的固溶度、擴散系數與n型發射區的磷相匹配， sio _ 2對其又有良好的掩蔽作用，早被選為npn硅平面器件的理想基區擴散源，但b在硅中的固溶度大（ 1000時達到5 10 ~ （ 20 ） ，擴散系數小， b在硅中的雜質分佈不易形成pn結中雜質的線性緩變分佈，導致器件不能滿足高反壓的要求，隨之又出現了硼鋁塗層擴散工藝和閉管擴鎵工藝，前者會引起較大的基區偏差，雜質在硅內存在突變區域，導致放大系數分散嚴重，下降時間t _ f值較高，熱穩定性差；後者需要難度較大的真空封管技術，工藝重復性差，報廢率高，在擴散質量、生產效率諸方面均不能令人滿意。
  3. The sample with low emitter efficiency has completed as the method of above. this lead to the greatly decrease of the reverse recovery time and the low reverse leakage and forward voltage, especially the excellent temperature character of the leakage. the test date shows that the samples reach the first class of international level

    本論文作者通過模擬測試，驗證了課題研究的理論設想，並設計製作了具有低陽極發射效率結構的高壓功率frd ，利用局域鉑摻雜和電子輻照相結合的壽命控制方式，實現器件反向恢復時間的極大減小，並且反向漏電流、軟度因子、正向壓降等關鍵參數也較理想，且具有極佳的漏電溫度特性，達到器件綜合性能的優良折衷，達到國際先進水平。
  4. The products, optical fusion splicer, otdr, light source, optical power meter ， fiber optic cable, operating tools of optics and material, cable blow cable machine ， coupler make station ， are widely used in the field of telecom, unicom, mobile catv, power, railway, petro - chemical, troop, coal, science and research college and etc

    公司生產經營的光纖熔接機、光時域反射儀（ otdr ） 、光源光功率計、光纖光纜、光纜施工工具及器材、光纜吹纜機、光纖熔融拉錐設備等產品，廣泛應用於電信、移動、聯通、郵電、廣電、電力、鐵路、石化、部隊、煤炭、科研院校等領域。
  5. Impedance, reflection coefficient, return loss, and vswr test procedure measured in the time and frequency domain for electrical connectors, cable assemblies or interconnection systems

    電連接器電纜附件或互連系統在時間和頻率域中測量的阻抗反射系數回程損耗和vswr試驗程序
  6. 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。
  7. Connectors for electronic equipment - tests and measurements - part 23 - 4 : screening and filtering tests ; test 23d : transmission line reflections in the time domain

    電子設備連接器.試驗和測量.第23 - 4部分:屏蔽和過濾試驗.試驗23d :傳輸線路的時域反射
  8. Connectors for electronic equipment - tests and measurements - part 23 - 4 : screening and filtering tests - test 23d : transmission line reflections in the time domain

    電子設備用連接器.試驗和測量.第23 - 4部分:屏蔽和過濾試驗.試驗23d :時域的傳輸線路反射
  9. By solving the 2 - d viscous navier - stocks equation, the flow field of the microjet was simulated. the results clearly reveal the features of microjet and the process of vortex pairs ? formation, advection, diffusion and entrainment effection on ambient fluid

    結果清晰的反映了作動器出口附近微射流場的形態，同時也再現了此區域內旋渦對的生成、遷移和擴散過程以及微射流對周圍流體的卷吸作用。
  10. We re zeal quest scientific technology co., ltd, a technic supplier as well as the distributor in the field ofenvironmental sciences, ecology research and life sciences, as botany physiology, soil study and water analysis research. we re not only specialized in the laboratory instruments forwarding on the marketing, but on the technique service with the solid foundation, which are widely equipped in the research lab. also, we ve been cooperating with many most famous scientists for our technical support to both our staff and the customers for years. we do believe that the good service and support will lead us to the future

    2006年12月5日和7日，我司技術人員分別在蘭州大學和中國科學院水土保持研究所舉行了第14和第15期技術講座。這兩次講座圍繞著德國walz公司的pam系列調制熒光儀和gfs - 3000光合作用測量系統，以及美國sec公司的trase土壤水分時域反射儀進行，在儀器的原理操作應用技巧經驗等方面做了系統介紹。
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