拍頻 的英文怎麼說
中文拼音 [pāibīn]
拍頻
英文
beat frepuency-
The methods of direct measurement with low precision such as frequency and time interval methods and the methods of indirect measurement with high precision such as beat frequency method, dual mixer time difference method and frequency difference multiplying method are supported on the platform. the fundamentals of each method are studied. the quantization error is analysed and the illustration is given for each method
該平臺支持直接頻率和時差法兩種較低精度的測量方法以及雙混頻時差法、差拍頻率法和頻差倍增法高精度的簡接測量方法，本文研究了各種測量方法的原理，對各種測量方法的量化誤差作了分析，並給出具體的實例。Bfi beat - frequency interferometer
拍頻干涉儀Abstract : we have studied theoretically a beat effect in a four - level system due to fifth - order optical polarization, and considered the cases that the pump beams have either narrowband or broadband linewidth. we have found that the accuracy for the energy - level splitting measurement is determined by the homogeneous linewidths of the optical transitions. that is to say, this technique can achieve doppler - free precision in the measurement of the energy level splitting between two excited states which are dipolar forbidden from the ground state
文摘:研究了四能級系統中基於五階極化的拍頻效應，考慮了抽運光束為窄帶線寬或寬帶線寬的情形.發現其對能級分裂的測量精度決定於光學躍遷的均勻增寬.也就是說，這種技術在測量與基態是偶極禁戒躍遷的兩激發態之間的能級分裂時，可得到消除多普勒增寬的精度And the solutions of the three problems above are discussed : the solution to the simulcast interfering which is caused by the simulcast delay spread ( sds ) and the zero - beating is given in chapter four. based on the well understanding of the principle of ms - i / h / 0 in ipnp, the examples are given in chapter five on how to solve the problem of communication interruption between paging zones. through the analyse of signal switching between chengdu and deyang, the synchronization error between flex frames, and the bug in the multi - frequency roaming principle are pointed out
通過以上分析，文章探討了對上述三個問題的解決： ?對同播干擾問題，分別分析了時延差和零拍頻所造成同播干擾的客觀存在，探討了系統設計和網路優化的基本方法； ?對ipnp聯網障礙，提出了在掌握ipnp對各pncc作為輸入局歸屬局?輸出局（ ms ? i h o ）的靈活定義、以及相關參數配置原理的基礎上，分析聯網障礙的思路； ?對信號切換障礙，以成都和德陽兩地的局部廣域覆蓋為例，分析了flex幀失步和flex多頻漫遊原理設計缺陷的客觀存在，並探討了相關的解決方法和建議。After filtering out the part of low frequency from the data coming from condition monitor and calculating the comprehensive magnitude of spectrum around the clap - frequency, the alarm limit of clap - frequency vibration mal - functions are determined by using statistical method
從信號中濾除高頻成分，求得樣本拍頻附近譜線的綜合幅值，用數理統計的方法確定了拍振故障報警限。Abstract : we have studied the polarization beats spectroscopy with phase - conjugation geometry in a cascade three - level system. it was found that the accuracy for the energy - level difference measurement is determined by the homogeneous linewidths of the optical transitions. under the condition for the occurrence of beating, the frequency difference of the beat between two independent light sources could exceed the laser linewidth. the measurement accuracy for laser absolute frequency could reach the same order of magnitude as the laser linewidth
文摘:研究了級聯三能級系統中的相位共軛極化拍頻光譜術.發現其對能級差的測量精度決定於光學躍遷的均勻增寬.在符合拍頻條件時，兩獨立光源拍頻的頻差可以超出激光線寬，激光絕對頻率的測量精度可達到與激光線寬同一量級Period of beat
拍頻周期It is composed of thirteen functin ? components including two 3 - db y - junction power splitter, two directional couplers, two waveguide attenuators and one polarizer of waveguide itself. the prominent feature of the device is that it has a beat detection function with respect to the single y - branch mioc device, and it plays an important role in improving the inertial - grade and the high precision steady - aim system because of the beat detection function. farthermore it has direct influence on the improvement of the high flexibility, shockproof and overload - resistance for the steady - aim system
器件的工作波長為1 . 3 m ，集分束器、合束器、起偏器/檢偏器、相位調制器、波導吸收器等十三個功能單元於一體，除了單y多功能集成光路器件具備的功能外，它還具有拍頻檢測功能，因而對提高慣導級和高精度穩瞄系統起著重要的作用，並直接影響著穩瞄系統的高機動性、抗沖擊力和過載能力的提高。With ordinary photocells, one can pick up the frequency between two different lasers.
用普通光電池，人們就能夠深測到兩個不同的激光之間的拍頻。Quantum beats in ladder three - level - system
梯型三能級系統量子拍頻研究Secondly, the squeezing properties of the light of the f - type quantum - beat three - level atom interacting with the single - mode radiation fields in squeezed vacuum states or in binomial states have been studied by means of quantum theory and the numerical method
論文的第二部分研究了v -型量子拍頻三能級原子與單模壓縮真空場和二項式態光場相互作用過程中光場的壓縮效應。Bfo beat - frequency oscillator
拍頻振蕩器Beat interference pattern
拍頻干擾圖Beat measuring apparatus
拍頻測試儀Radio - frequency beat
射頻2拍頻Environmental testing - part 2 : test methods test fe : vibration - sine - beat method
環境試驗.第2部分:試驗方法.試驗fe :振動.正弦拍頻法The wakefield excited by an ultrashort and ultrahigh laser pulse propagating through tenuous plasma can accelerate electrons to extreme high energy. this can be used as a mechanism to design minitype electron accelerator. this thesis is devoted to studying those issues relevant to the wakefield accelerator, namely the laser wakefield accelerator ( lwfa ), laser wakefield accelerator driven by multiple pulses ( mp - lwfa ), plasma beat wave accel - erator ( pbwa ) and self - modulated laser wakefield accelerator ( sm - lwfa )
本文的目的是：利用粒子模擬方法，研究和比較激光尾流場加速電子的四種主要方案：短脈沖激光尾流場加速（ lwfa ） 、多脈沖激光尾流場加速（ mp - lwfa ） 、拍頻束尾流場加速（ pbwa ） 、自調制激光尾流場加速（ sm - lwfa ） 。Environmental testing for electric and electronic products. part 2 : test methods. test fe : vibration - sine - beat method
電工電子產品環境試驗第2部分:試驗方法試驗fe :振動-正弦拍頻法Environmental testing - part 2 : tests methods ; test fe : vibration, sine beat method iec 60068 - 2 - 59 : 1990 ; german version en 60068 - 2 - 59 : 1993
環境試驗.第2部分:試驗方法;試驗fe :振動，正弦拍頻法We believe that the improvement of the frequency response is due to a two - mode beat that includes the main mode of the slave laser and the master laser mode, which coincides with the side band of the slave laser
激光器頻率響應的改善可以用兩個模式的拍頻來解釋，一個模式是從激光器的主模，另一個是主激光器的模式，該模式與從激光器的邊帶重合。分享友人