line frequency 中文意思是什麼

line frequency 解釋
電網頻率
  • line : n 1 線；繩索；釣絲；測深度用繩，捲尺。 a fishing line 釣魚線。 be clever with rod and line 會釣魚...
  • frequency : n. 1. 屢次，頻仍，頻繁。2. （脈搏等的）次數，出現率；頻度；【物理學】頻率，周率。
  1. This instrument can meter the electric level, frequency spectrum, carry to noise ratio, a / v, cobbly ratio, voltages of the ac trunk line and the battery. furthermore it can display the above information on the lcd and store them in the eprom

    該場強儀可以對有線電視系統的電平、頻譜、載噪比、 a v比、系統不平度、交流干線和電池電壓等進行測量，並通過液晶顯示，結果保存於eprom中。
  2. If the numerical value line resonance frequency plus some shaft connatural frequency of generator is equal to operation frequency, it brings about coupling resonance between generator and system, which maybe results in shaft rupture of synchronous generators

    當線路電氣諧振頻率與同步電機的軸系某一固有振蕩頻率近似互補于電網工頻時，將導致機電系統的耦合振蕩，嚴重的會造成同步發電機大軸的扭斷。
  3. The core instrument for frequency - following is the pll. the dsp is used to realize the regulating of the dead time on - line

    用鎖相環作為頻率跟蹤的核心器件，根據最佳死區的理論，用dsp實現死區的在線調節。
  4. The theory basis of selecting the equipment is found by calculating the medium frequency induction hrating furnace and onatching equipment in 125mn drop press production line

    摘要通過對125mn熱模鍛壓力機生產線中頻感應加熱爐及配套設備的分析計算，找出了選型的理論依據。
  5. We possess accurate processing equipments, such as hydrogen making equipment, reducing furnace, isocratic press machine, 500t capacity hydraulic machine, intermediate frequency induction furnace, high or low temperature fritting durance and forging equipment, which forms whole production line

    公司擁有制氫裝置、系列制粉還原爐、等靜壓力機、 500噸油壓機、中頻感應爐、高低溫燒結爐、鍛造設備及精密加工設備。
  6. 4. adopt vector frequency converter motor for traction transmission, which can be controlled with invariable line speed

    4牽引傳動採用矢量變頻電機，實現恆定線速度控制。
  7. Delay line oscillator is composed of broadband amprifer adjustable attenuator and saw sensor device. after output signal of delay line oscillator is smoothed, it mixes with 109mhz local oscillation signal. its differential frequency signal is smoothed by low - pass filter trimmed by shaping circuit and processed by digital processing circuit

    延遲線振蕩器由寬帶放大器、可調衰減器和聲表面波質量傳感器件構成。延遲線振蕩器輸出信號經濾波后與109mhz的本機晶體振蕩器輸出信號相混頻，通過低通濾波取其差頻，並經整形後由數字信號處理電路處理。
  8. Ddg series low - voltage large - current dry - type transformers special transformers for line frequency furnaces, electro - slag furnaces, resistance furnaces, and salt bath furnaces applications ; small - capacity high - voltage transformers

    各種特殊變壓器工頻爐變壓器電渣爐變壓器電阻爐變壓器鹽浴爐變壓器小容量高壓變壓器等
  9. Line frequency and voltage tests for electronic measuring instruments

    電源頻率與電壓試驗
  10. Typically caused by distortions to the frequency components below the horizontal line frequency

    它沿水平方向逐步擴展，通常是由低於行頻的頻率畸變造成的。
  11. The person that pass by the path asks a pedestrian, pedestrian dan yun nods line frequency or prevent a river from 15 north, come 40 on the west battalion cropland

    道旁過者問行人，行人但云點行頻或從十五北防河，便至四十西營田。
  12. Line frequency and voltage test

    電源頻率與電壓試驗
  13. The method of environmental test for analytical instruments - line frequency and voltage test

    分析儀器環境試驗方法電源頻率與電壓試驗
  14. Firstly, the principle of high resolution sar and theoretical imaging model were concisely introduced. pulse compression for line frequency modulation pulse signal, resolution of range direction and azimuth direction, and doppler history were discussed subsequently. in accordance with sar signal processing, range immigration was also involved

    本文首先分析了合成孔徑雷達高分辯力成像機理和sar成像理論模型，討論了線性調頻脈沖信號的匹配濾波（脈沖壓縮） 、 sar距離特性、方位特性和多普勒歷史，同時針對sar成像信號處理，分析了成像處理的基本原理和成像處理中的距離遷移校正等關鍵問題。
  15. After compared lots of literatures and methods, we offer the norm for selecting different filters. that is to say, in arrhythmia analysis, the integer coefficient lowpass filter is adopted, while in heart rate variability analysis, the high pass filter designed by all - pass minus low - pass filter or filter which can remove both baseline wander and 50hz power - line frequency at one time is used

    在對大量文獻進行比較、研究的基礎上，針對不同的臨床應用目的，提出了各種濾波器的選用準則：在心律失常分析中選用整系數低通數字濾波器對原始心電信號進行濾波；在對心率變異信號進行分析時需先用低通濾波器濾波然後再採用全通減低通方法設計的高通濾波器或者一次性濾波器進行濾波。
  16. Design of a high - precision line - frequency phase standard meter

    一種高精度工頻相位標準表的設計
  17. 2. heating treatment : 1300065002580mm annealing furnace max furnace is 120t, the high temperature is 11500c, 620023001500mm hardening furnace, 11005000mm line - frequency hardening machine tool

    2熱外理： 1300065003580mm退火爐最大裝入量120t最高爐溫11500c 620023001500mm淬火爐11005000mm工頻淬火機床。
  18. This is fairly commonly utilized, and affects the line frequency component ( and odd harmonics )

    這種作法已經被廣泛應用，並可以用以改善市電頻率成分（包括奇次諧波。 ）
  19. Line frequency induction furnace

    低周波感應電爐
  20. However input current distortion at the zero - crossing of the input voltage is a common problem in active pfc converters, and it becomes more serious as the line frequency is increased. the purpose of this thesis is to reduce the zero - crossing distortion of input current at high input frequency application

    但有源pfc變換器存在輸入電流過零畸變的缺陷，並且隨著輸入頻率的升高而越來越嚴重，本文的工作就是針對解決高輸入頻率下嚴重的輸入電流過零畸變而展開的。
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