測頻 的英文怎麼說
中文拼音 [cèbīn]
測頻
英文
frequency measurement-
It is difficult point of the design of the new system that directly generated statistic data from the data sources. because that the ability of monitoring of each enterprise of petrochina is different. especially they lack of some monitoring point, and the monitoring frequency is inconformity
從數據源直接生成統計匯總數據是新系統的設計難點和突破口由於股份公司各企業監測能力和具體情況懸殊很大，存在監測頻率不一致、監測點位不足等問題，使得監測點類別劃分上很困難。Intermodulation suppression for fh ( frequency hopping ) receiver is designed by selecting the intermediate frequencies and changing group of filters, local oscillation ( lo ) frequency, bandwidth of lo frequency under the condition that receiver configuration, sensitivity, dynamic range, instantaneous bandwidth and precision of frequency measurement are fixed
摘要針對跳頻接收機的體制和靈敏度、動態范圍、瞬時工作帶寬、測頻精度等設計參數，通過改變預選器組成、本振頻率和本振帶寬，分析接收通道的中頻選取原則，以實現跳頻接收機的互調抑制設計。Frequency measurement by stroboscope
閃光測頻We have developed a high precision wavemeter with an accuracy of 2 10 ^ ( - 8 ) in measuring vacuum wavelength, and a frequency measurement instrument by femtosecond modelocked laser with an accuracy of commercial cs standard
為了適應研究工作的需要，研製了高精度激光波長計，測量真空波長的準確度可達2 10 ^ （ - 8 ）的量級，同時研製了飛秒鎖模激光的測頻裝置，目前的測量精度可與小銫鐘的精度相同。Due to too much short sustained time duration of oscillation for the blades and too wide distribution of oscillation frequency over the audio frequency range, a procedure of variable gate frequency measurement has been applied to the design of frequency measuring instrument with a micro - - controller unit ( mcu ) as its core. this procedure features a high precision and rapid speed
由於葉片振動持續時間很短，且振動頻率在音頻范圍之內分佈較廣，故在設計以單片機為核心的測頻儀時採用了變閘門測頻法，該方法具有精度高、速度快的優點。Weather satellites are equipped with sensors for detecting visible lights and infrared ( ir ) radiation using different channels in the electromagnetic spectrum
衛星圖像知識氣象衛星備有多條觀測頻道，一般能感應電磁波中的可見光和紅外光。Frequency measurement by comparison with time scale
時標比較法測頻Based on the summary of the inspection effect for one hydrogeological year of stage geological disaster prevention project of xingshan county in three gorges region, this paper puts forward the relevant and effective methods for the harnessing of landslide, dangerous rock body, collapsed bank and other different geological disasters, and proposes suggestions for the future inspection of geological disaster prevention projects
摘要本文通過對三峽庫區興山縣二期地質災害防治工程一個水文年的效果監測總結，提出了針對滑坡、危巖體、塌岸不同地質災害體的抗滑樁、格構、掛網噴砼等不同治理工程所應採取的與之相適用、而有效的監測方法、監測頻率，以及資料整理、工程效果分析時應注意的問題等，為今後做好地質災害防治工程監測提出建議。Then, with respect to the objective of minimizing the total experimental cost, the optimal test plan ( including the sample size, inspection frequency, and the termination time needed by the classification rule for each of competing designs ) is derived by solving a nonlinear integer programming with a minimum probability of correct classification and a maximum probability of misclassification
首先，我們提出一種具直觀優點的分?法則，然後以總試驗成本的最小化為目標，並賦予一正確分?的最小機?要求和錯誤分?的最大容許機? ?個限制條件，以決定出在所提出的分?法則下，各競標設計樣式所需的樣本? 、 ?測頻?和試驗終止時間的最佳組合。This thesis makes the analysis of the methods of frequency measurement, which is the main function of the universal counter, and decides to use the gate modification method to measure frequency
本文對計數器的主要功能之一，頻率測量方法進行了分析，提出採用閘門時間修正法進行測頻，降低了量化誤差的影響。Frequency measurement by vibrationg reed indicator
用舌簧頻率計測頻Frequency measurement by digital meter
用數字頻率計測頻Utilizing the internal high - rate counter in fx2n series plc and simple external circuit, the author real - timely measures the hydro generator frequency with high accuracy and reliability, which meets the engineering application requirements
作者利用fx2n系列plc內部的高速計數器和簡單的外圍電路，實現了對機組頻率的測量，滿足了工程實踐中對測頻可靠性、實時性和精度的要求。In the second section, a new method of simulation on frequency measurement receiver is put forward and the simulation model is illuminated by the example of superhetrodyne receiver. and the evaluating results based on the simulation are given
其次，在上述信號環境模擬模型的基礎上，本文提出了一種新的測頻接收機模擬方法? ?基於脈沖描述字的測頻接收機模擬方法。Frequency estimation technology and bandpass filtering, which are named as wideband digital downconversion technology, are the key technologies to realize data rate conversion system
測頻技術以及帶通濾波，即寬帶數字下變頻技術，是實現數據率轉換系統的關鍵技術。Research on the method for frequency measuring with high precision based on a single chip computer
基於單片機高精度測頻方法的研究However, this algorithm is not fit for the detection of the signals whose frequencies are very close to each other
但是該演算法不適用於檢測頻率間隔很近的諧波和間諧波。Lamb waves method is mainly used to characterize thin plate materials, without using very high frequency, it can measure the velocity of transverse wave and longitudinal wave, depth of the plate, and the bonding quality between plates
蘭姆波法主要用於表徵薄板類材料，無需較高檢測頻率，可以測得板中縱波和橫波的聲速、板厚和板與板之間的結合特性等，檢測精度較高。Parallel structure of poly - phase decomposition and parallel mixer is applied in the ddc circuit, it solves the bottleneck in mixing and increases the handle speed. the partition of the tuning channel according to the digital mixing sequence, and the ddc by means of decimating first, the low - pass filtering and mixing realize efficiently the down - conversion of the variable carrier frequency band - pass signal. according to the structure of the ddc and the requirement of the frequency
短數據快速測頻演算法的具體實現:使用并行流水線的設計方法，提高了系統的數據吞吐率，在100mhz的系統時鐘下，能夠實時處理400mhz ~ 600mhz速率a / d采樣的數據，在64點采樣， 100mhz系統時鐘情況下，初次測頻佔用時間640ns ，以後每次測頻佔用時間縮短到160ns ，實時地提供多相濾波下變頻所需的載頻位置信息，縮短了接收機的調諧時間。Macromolecule humidity instrument based on integration methodof frequency measuring and period measuring
基於測頻測周方法集成的高分子濕度儀分享友人