電波損失 的英文怎麼說

中文拼音 [diànbōsǔnshī]
電波損失 英文
radio wave loss
  • 電 : Ⅰ名詞1 （有電荷存在和電荷變化的現象） electricity 2 （電報） telegram; cable Ⅱ動詞1 （觸電） give...
  • 波 : Ⅰ名詞1 （波浪） wave 2 [物理學] （振動傳播的過程） wave 3 （意外變化） an unexpected turn of even...
  • 損 : Ⅰ動詞1 （減少） decrease; lose 2 （損害） harm; damage 3 [方言] （用尖刻的話挖苦人） speak sarcas...
  • 電波 : [電磁] radio wave; electric wave; hertzian wave
  • 損失 : 1. （失去） lose 2. （失去的東西） loss; wastage
  1. Commercial building telecommunications cabling standard - part 2 : balanced twisted - pair cabling - addendum 3 - additional considerations for insertion loss and return loss pass fail determination

    商用建築電信電纜敷設標準.第2部分:對稱雙絞合線電纜敷設.補充件3 .插入損耗和回波損耗通過失效確定的附加考慮要素
  2. These radio waves are very weak when they arrive at the television receiving sets on earth but they can be amplified again to make up for this loss in intensity

    當這些無線電波到達地球，被電視接收機收到時是非常弱的，但它們能夠被再放大以補償這種強度的損失。
  3. Fault location techniques are used to pinpoint location of the fault on a tra - nsmission line. transmission line faults must be located accurately to allow maintena - nce crew to arrive at the scene and repair the faulted section as soon as possible, which can relief the burdens of patrol personnel and reduce the revenue losses due to power outage. the accurate fault location alogrithms play an important role in power system safety, economy and reliability. in this paper, diversified fault location algorithms are summarized. according to the principles of algorithms, they can be classified into two categories : impedence based algorithm and traveling wave based algorithm. based on the analysis and comparission of each algorithm, the corresponding merits and app - lication limitations are presented

    精確的故障定位為現場巡線工作人員及時提供準確、可靠的信息，減輕人工巡線的負擔，同時加快線路的恢復供電，減少因停電造成的綜合經濟損失，為提高電力系統運行的安全性、經濟性和可靠性發揮重要的作用。本文總結了現有的各種測距方法，根據測距的原理將其分為阻抗法和行波法兩大類，對各種演算法的優缺點及適用范圍進行了分析，在此基礎上提出了一種組合的測距方案，並對演算法進行了模擬分析。
  4. Furthermore, this dissertation also gives a comprehensive analysis and comparison to the torque ripple factor, torque - current ratio and other aspects for pseudo - sinusoidal emf bldcm drived by 120 conduction mode, 180 conduction mode and self - synchronous svpwm mode respectively. the simulation and the experimental results indicate that self - synchronous svpwm method is more effective for minimizing the torque ripple without any expense of the torque - current ratio when the crest width of the back - emf waveform is less than 107 electrical angles

    對準正弦波反電動勢無刷直流電動機在120導通方式、 180導通方式和自同步svpwm三種控制方式下的轉矩脈動系數、轉矩電流比等方面進行了全面的分析與比較，模擬研究和實驗結果表明，當反電動勢的平頂寬度小於107電角時，採用自同步svpwm控制方法可以在不損失轉矩電流比的基礎上，更有效地抑制電磁轉矩脈動。
  5. Therefore the fault damages transformer itself, affects the power system network, and brings loss to users

    因而，其故障不僅對變壓器本身造成損失，同時也會因變壓器故障而波及電力網路，給用戶造成間接損失。
  6. The computer - maker faces lacklustre profits, a volatile share price, a costly product recall, defecting executives and an investigation of its accounts by american regulators

    這個電腦生產商所面臨的是極低的利潤，波動的股價，損失慘重的召回，失誤的主管以及由美國管理者對其賬戶展開的調查。
  7. In this paper according to the design scheme of yao heba power station in nan yahe river, the mathematical model with longer and complicated conduit system, elastic water hammer and pid regulating low of voter turbine adjusting system in the case of the small fluctuation has being built, which include conduit system, surge tank, draft tube, water turbine, generator and governor. the hydraulic losses are taken into account, and nonlinearization in water turbine and the governor is also taken into account

    本文根據南椏河姚河壩水電站的設計方案，對水輪機調節系統，按長引水管道復雜引水系統、彈性水擊、調速器為pid調節規律，在小波動情況下，對包括引水道、調壓井、尾水管、水輪機、發電機、調速器在內的水輪機調節系統建立數學模型，並計及引水管道水力摩阻損失，對水輪機、調速器考慮了其中的非線性，利用功能強大的matlab軟體編制了源程序進行計算機模擬計算。
  8. Switches play transmitting and cutting electrical current role during the working electrical net as a hinge, the important role will be brought into effect by the key part in switches - arc contact. if the contacts have invalidated and could not accomplished the important role during the working electrical net, switches would detonate, which result in the paralysis of whole net linked by the switches, the higher the transmitting voltage of net is, the bigger the affected area is, therefore, in order to decrease or avoid the arc eroding and invalidation during the net working, it is necessary to study the arc eroding and invalidation mechanism of contacts, sequentially make the whole net stable

    可以說是電網中樞紐，而實施斷路器重要作用的核心部件就是弧觸頭，如果在動態使用中由於觸頭的失效而不能有效開斷的話，斷路器就會整機爆炸，後果就是它所連接的整個電網處于癱瘓狀態，電網的輸變電電壓越高，波及的面積越大，所以有必要對觸頭的動態燒損和失效進行詳盡的分析，減少或避免實際使用過程中的燒損和失效，從而穩定整個電網。
  9. The system had auto startup and stop function by software. the dsp based motor control system had lower current harmonic, more efficient use of supply voltage than spwm, less switch loss. on the other hand, this system make a lower noise for the pwm modulation. frequency is up to 20khz

    本系統實現了電機的軟啟動、軟關斷功能，電機電流的諧波失真較少，電壓利用率比常規的正弦波脈沖寬度調制（ spwm ）有了較大的提高，器件的開關損耗也得到了明顯的減少。
  10. This paper proposes a two - armed push - pull inverter, including its topologies, power distributions in every switching devices and modulation schemes. the major parameters such as thd and df of this vsi are analyzed. comparison study shows that the quality of two - armed push - pull vsi is better than those of square - wave vsi. and the switching loss is lower than that of pwm scheme at same time, especially used in wide frequency range. detailed calculating formulae and experimental results are presented

    該文介紹了一種雙臂推挽式逆變器，包括其電路拓撲、每個開關器件的功率分佈和調制策略.分析了這種電壓源逆變器的主要參數，如總諧波失真度（ thd ）和失真指數（ df ） .比較研究表明，這種逆變器的質量明顯優于方波逆變器，同時開關損耗明顯低於pwm調制方式，特別適用於寬頻范圍.介紹了計算公式和實驗結果
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