標稱頻率 的英文怎麼說
中文拼音 [biāochènbīnlǜ]
標稱頻率
英文
nominal frequency-
Luminaires that conform to the safety standard should bear proper markings of rated voltage, rated frequency, rated power, number and type of lamp bulbs, model number, mark of origin ( manufacturer nametrade mark ) and symbol for suitability or non - suitability for direct mounting on combustible surfaces where applicable
符合安全標準的燈飾須有適當的標記，包括額定電壓、額定頻率、額定功率、燈泡的數目和類別、型號、原產地標志（製造商名稱或商標） 、是否適宜於直接安裝在可燃物質表面的標志等資料。Consequently, lots of chapters are consisted of " scripture ", " biography ", and " note " ; the forming of these documents is a dynamic process of development. the editing of yizhoushu underwent the following stages : it was edited for the first time during pre - qin period, proofread and supplemented by liuxiang and his son in han dynasty, and the further rectification and reorganization was in jin dynasty. in the course of circulation and development, some chapters had circulated in single pamphlet, which were augmented and interpreted by the descendants and then were compiled again in this book, some have been lost after having been separated
有些篇章是西周文獻，其語言特點表現在語氣詞「哉」出現的頻率較高，且功能具有多樣性；第一人稱代詞有「予」而無「余」 ，不用第二人稱代詞「而」 ；不用句末語氣詞「也」 、 「焉」 、 「乎」 、等；沒有疑問代詞「孰」 、 「安」 、 「奚」 、 「惡」等；沒有「者，也」的判斷句形式；沒有明顯形態標志的反問句式；少用或不用四字韻語。Taking natural frequency and mode as damage principle, damage detection is studied as optimal problem based on genetic algorithm, and damage indices, symmetry and precision in the damage detection is discussed. numerical simulation of the damage detection of offshore platforms using genetic algorithm proves the feasibility of genetic algorithm in damage detection of large structure ; program all the process of genetic algorithm in damage detection into damage detection system
以實測的固有頻率和振型為診斷依據，將損傷診斷問題歸結為優化問題，採用遺傳演算法加以研究，以10單元固端梁的損傷診斷為基礎，討論了診斷中出現的損傷指標，損傷對稱性和變量精度等問題；將遺傳演算法的損傷診斷應用於海洋平臺，驗證了遺傳演算法用於大型結構損傷診斷的可能性；並用matlab將遺傳演算法應用於損傷診斷的全過程編製成損傷診斷系統。The concept of " timing " in the article is not the clock in our ordinary living, but syntheses which is made up of some frequency source in the signal generator ( such as cs atom frequency standard, rb clock & high accuracy quartz crystal oscillator ) which produces the primary frequency, the matching input interface and the matching output interface and controlling circuit etc. for example, bits is a kind of timing equipment, which is used to control the timing of some functions
本文論及的「時鐘」概念不是指日常生活中使用的鐘表，而是由產生基準頻率的信號發生器（如銫原子頻率標準、銣鐘及高精度石英晶體振蕩器等）中的某種頻率源以及相配套的輸入、輸出介面和控制電路等組成的一整套具有特定同步定時功能的綜合體。如bits就是一種時鐘設備，它提供用在通信系統中控制某些功能的定時的時間基準設備，時鐘提供的信號稱為基準信號、定時信號或同步信號。Growing demand for greater wireless data capacity and the crowding of regulated radio - frequency spectra favor systems that offer not only high bit rates but high bit rates concentrated in smaller physical areas, a metric that has come to be called spatial capacity
由於人們不斷要求更大的無線資料容量，再加上受管制的無線電頻譜已趨飽和，受到青睞的系統不僅要能提供高位元速率，而且必須集中在較小實體區域內，這樣的衡量標準稱為空間容量。In this method, the phase difference between two compared signals that have same nominal frequency can be converted into voltage signal by phase detector. the voltage signal varies linearly with the phase difference and can be displayed or recorded by some instruments
此方法是將兩個被比對的標稱值相同的標準頻率信號之間的相位關系，通過線性鑒相器轉換成與它成線性關系的電壓信號，並通過相應的設備進行顯示紀錄。Upper limit of the nominal of use for frequency
標稱使用頻率范圍上限Based the capacitance standards, studies on the calibration for the frequency response of single - port capacitor and the measurement for the frequency response of 4tp resistor are performed. the work is divieded in several parts as follows
在10khz 1mhz的頻率范圍內，利用開發的傳遞測量系統，對標稱值為0 . 01 f 、 0 . 1 f和1 f四端對固體介質電容器進行頻率響應的測量。Secondly, basing on the theory of on - off gain of small signal, the raman gain coefficient for frequency shift between 0. 5 and 20 thz of standard sigle mode optical fiber is measured by pump - probe method through a super luminescent diode ( sld ) as a broadband small signal probe source. thirdly, numerical simulation analysis of gain characteristic of raman fiber amplifier for c band wdm signal light is made according to the raman gain coefficient of the fiber measured before through target and four rank runge - kutta method. at the invariability of wavelength and maximum power of each of two pumps, schematic of powers of two pumps for best flatness on c band wdm optical gain was found out, at the same time, the factors of resulting in gain saturation is analyzed, too
本文首先應用經典的電磁理論對拉曼光纖放大器的工作機制進行了分析，然後，根據小信號理論推導出的開關增益求出了光纖拉曼增益系數的表達式，採用泵浦-探測波的方法，利用超輻射激光二極體（ superluminescentdiode簡稱sld ）作為探測光源，測量了所用標準單模光纖頻移為0 . 5 - 20thz的拉曼增益系數，之後根據所測得的光纖的拉曼增益系數譜對應用該類光纖構成的放大c波段wdm光信號的拉曼光纖放大器的增益特性採用打靶法和四階龍格- - -庫塔進行了數值計算，在給定了兩個泵浦光源的波長和最大功率后，找出了反向泵浦情況下使c波段wdm光源增益最平坦的兩個泵浦的各自最佳功率，同時也分析了導致信號光飽和的原因。At present the manufacture of surface acoustic wave use the technology of the final submicron. a series of the devices of low insertion loss, high q saw rayleigh surface acoustic wave resonators or stws that insertion loss has less than 5db, load quality factor ( ql ) is more than 1000 on the quartz piezoelectric with zero of first temperature factor in the research. these difference frequencies are 60mhz, 280mhz, 739mhz and 1ghz of normal frequency and at also surface acoustic wave. using 1. 25db noise factor amplifier, careful design curcuit, good setting printed curcuit board, and using the 1ghz surface transverse wave resonator as frequency element, researching the low phase noise surface acoustic wave with sideband phase noise near ? 120dbc / hz deviating 1khz on carrier, spurious suppress with 80db
本研究採用一階溫度系數為零的壓電石英基片上製作出損耗小於5db 、有載品值因素（ ql值）超過1000的一系列低損耗、高q值聲表面波rayleigh波或stw諧振器，頻率分別為60mhz 、 280mhz 、 739mhz和1ghz等不同頻率的高性能聲表面波諧振器。並採用噪聲系數為1 . 25db的低噪聲系數放大器，精心設計電路，優化設計布置印製電路板，用標稱頻率為1ghz的聲表面波諧振器為頻率控制元件，製作出在偏離載頻1khz處的單邊帶相位噪聲近- 120dbc / hz 、雜波抑制達80db以上的低相位噪聲聲表面波振蕩器。Turning the cpu speed back down to its rated value solved the problem
后來，當把cpu的頻率調回它的標稱速度后，問題迎刃而解。Integrated services digital network isdn - explicit call transfer supplementary service - digital subscriber signalling system no. one dss1 protocol - part 5 : test suite structure and test purposes tss tp specification for the network en
本標準行之有效用於和頻率100hz及以下的單相異步電動機繞組連接的，以及和三相異步電動機連接從而使這些電動機可由單相系統來供電的電動機電容器以下簡稱電容器。分享友人