time and frequency standard 中文意思是什麼

time and frequency standard 解釋
時間和頻率標準
  • time : n 1 時，時間，時日，歲月。2 時候，時刻；期間；時節，季節；〈常pl 〉時期，年代，時代； 〈the time ...
  • and : n. 1. 附加條件。2. 〈常 pl. 〉附加細節。
  • 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。
  • standard : n 1 標準，水準，規格，模範。2 旗；軍旗，隊旗；【徽章】標幟，標記；旗標，象徵。3 【植物；植物學】...
  1. For protective female worker healthy, law set the labor range that female worker prohibits be engaged in, unit of choose and employ persons must not arrange female worker to be engaged in the following these law prohibit the labor that female worker is engaged in : ( 1 ) course of study of mine well dirty ; ( 2 ) silvan industry cutting, put in arris and banish exercise ' s charge ; ( 3 ) " physical labor intensity classifications " the 4th class in the standard the exercise of physical labor intensity ; ( 4 ) the assembly of bldg. scaffold and remove operation, and the altitude wiring of electric power, telegraphic industry works ; ( 5 ) load continuously ( point to load the frequency is in 6 times hourly above ) load every time more than 20 kilograms, discontinuous load load every time more than 25 kilograms exercise

    為了保護女職工的身體健康，法律規定了女職工禁止從事的勞動范圍，用人單位不得安排女職工從事以下這些法律禁止女職工從事的勞動： （ 1 ）礦山井下作業； （ 2 ）森林業伐木、歸楞及流放作業； （ 3 ） 《體力勞動強度分級》標準中第四級體力勞動強度的作業； （ 4 ）建築業腳手架的組裝和拆除作業，以及電力、電信行業的高處架線作業； （ 5 ）連續負重（指每小時負重次數在6次以上）每次負重超過20公斤，間斷負重每次負重超過25公斤的作業。
  2. The labor range that female worker contraindication undertakes includes : ( 1 ) course of study of mine well dirty ; ( 2 ) silvan industry cutting, put in arris and banish exercise ' s charge ; ( 3 ) " physical labor intensity classifications " the 4th class in the standard the exercise of physical labor intensity ; ( 4 ) the assembly of bldg. scaffold and remove operation, and the altitude wiring of electric power, telegraphic industry works ; ( 5 ) load continuously ( point to load the frequency is in 6 times hourly above ) load every time more than 20 kilograms, discontinuous load load every time more than 25 kilograms exercise

    女職工禁忌從事的勞動范圍包括： （ 1 ）礦山井下作業； （ 2 ）森林業伐木、歸楞及流放作業； （ 3 ） 《體力勞動強度分級》標準中第四級體力勞動強度的作業； （ 4 ）建築業腳手架的組裝和拆除作業，以及電力、電信行業的高處架線作業； （ 5 ）連續負重（指每小時負重次數在六次以上）每次負重超過二十公斤，間斷負重每次負重超過二十五公斤的作業。
  3. This is the basis for the well-known cesium clock, presently the standard of frequency and time.

    這就是眾所周知的銫原子鐘的基礎，它是目前的頻率和時間基準。
  4. Standard definitions of physical quantities for fundamental frequency and time metrology - random instabilities

    基頻和時間計量學用物理量標準定義.隨機不穩定性
  5. Standard frequency and time signal - satellite service

    衛星標準頻時信號業務
  6. Intelligent counter digital frequency rotating speed line velocity display control transmit instruments are all adopt used advanced microprocessor for smart control. input is pulsed quantity or contect switch quantity signal, after cpu operation processing, count, rotating speed or line velocity will be clearly intuitional indicated by high brightness led numeral tube, at the same time, these signals can be changed into standard voltage current signal to transmit output. and have the functions of super - limited alarm, standard serial communication function

    簡易后備操作器接收從dcs系統或pid調節器給定的模擬量信號，正常控制時，操作器輸入輸出相當于直通的，以實現dcs系統或pid調節器對執行機構的自動控制，當前級dcs系統或pid調節器發生故障時，操作器接收到故障狀態信號，即轉為手動控制狀態，由按鍵控制操作信號的輸出，當故障解除，儀表自動恢復自動狀態。
  7. Secondly, this thesis introduces the motor test methods according to nation motor test standard and ministry motor test standard, introduces the algorithm of automated test process, and analyzes frequency motor automated test to a certain extent. at the same time, this thesis introduces the design of the system software, and the way of dealing with, saving, output the measured data. at last, this thesis gives the way of improving the system, and with the combining with the foreign test system, discusses the trend of motor automated test system

    本文首先將此電機自動測試系統和其他系統的硬體結構作了比較，分析了其優缺點；其次結合國家和部門標準，介紹了電機試驗的方法，自動測試的試驗過程演算法，並對變頻電機的自動測試作了一定的分析；再次介紹了系統軟體的設計和編寫，測試數據的處理、保存和輸出；最後對系統的進一步完善作了介紹，並結合國外的系統，對電機自動測試系統的發展方向作出展望。
  8. 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。
  9. Though the flood control engineering system improved the flood control standard and reduce the frequency of flood inundation and enlarger the protected area, but at the same time, the risk of dike broken and dam failed were added. moreover, people found that human living environment become worsen increasingly and the river ecosystem was destroyed

    然而，在與洪水斗爭的過程中，人們發現雖然通過大規模的水利工程建設，提高了江河的防洪標準，減少了洪水泛濫的幾率，擴大了防洪保護的范圍，但同時也增加堤防、大壩潰決等的風險，而且人類發現生存環境日益惡化，河流生態系統被破壞等諸多問題。
  10. In the scheme, not only the rtlinux ' s double kernel structure and its virtual interrupt are adopted, which make the standard linux process as the lowest priority one in the real - time kernel, but also the 8254 is set to work in the one - shot model by using the kurt ' s utime package, which improves the clock frequency of the os and reduces the cpu ' s extra burden

    這種新的實時化方案利用了rtlinux的雙內核體系結構和中斷虛擬機技術，將標準linux進程作為實時內核的一個優先級最低的任務進行調度；同時還利用了kurt中utime軟體包將定時/計數器8254置為one - shot工作模式，從而既提高了操作系統的時鐘頻率，又解決了cpu額外負擔過重的問題。
  11. Based on the response theory of an elastic earth to surface loads and the model of the standard atmosphere, the characteristics of changes in the loading effects with time, space and frequency are comprehensively investigated in this dissertation. the numerical results obtained in this study can provide accurate atmospheric correction models for high - precision continuous measurements of the geophysical fields such as gravity, tilt, displacement and strain on the earth ' s surface

    本文基於彈性地球對表面負荷的響應理論和標準大氣模型，綜合研究大氣負荷效應的時間、空間和頻率特徵，為地表重力、傾斜、位移和應變等物理場的高精度連續觀測提供精密大氣影響改正模型
  12. The main contents of this paper are outlined as follows, ( 1 ) the physical significations and the correlativities of the often - used h performance targets are summarized, the selection strategies of the weighting functions are researched, and loop - shaping method as well as standard problems of robust h control are introduced. the frequency domain methods of robust h control are also introduced to solve the rate - based congestion control problem of the high - speed communication networks, and the h based controller are designed to deal with the time - delay problem of the single bottleneck node and multiple resources networks

    主要研究內容包括（ 1 ）總結了各種常見h性能指標的物理意義及相互關系，探索了權函數的選取策略，介紹了迴路成形方法及h控制標準問題；最後把h控制頻域設計方法應用於解決高速通信網路基於流速的擁塞控制問題，設計基於h控制理論的流控制器用於解決多源單瓶頸網路中時變不確定多時滯問題。
分享友人
分享到 Line

分享到臉書