distribution frequency 中文意思是什麼

distribution frequency 解釋
分佈頻率
  • distribution : n 1 分配，分發，配給；分配裝置[系統]；配給品；配給量；【經濟學】配給方法，配給過程；分紅；【法律...
  • 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。
  1. The fractional fourier transform is linear time - frequency transform, and it doesn ’ t have disadvantages of wigner - ville distribution. moreover, the precision of this method is higher, and the performance of antinoise is better

    而分數階傅立葉變換是線性時頻變換，所以它不受交叉項的干擾，沒有不模糊區間減半的缺點，而且它的估計精度高、抗噪性能好。
  2. Plants growing in the semi - fixed sand dunes, on the other hand, were less branchy with a larger number of first - year shoots which were longer, and grew faster ; their leaves were longer and wider with a low length / width ratio. the characteristics of the branching system and leaf dimensions of the plants in fixed sand dunes were rather intermediary between those of the above. the frequency distribution and their frequency in the herb layer the scrubs also varied with habitats

    丘間低地的黃柳灌叢當年枝平均長度增加緩慢，短枝條的比例較高，當年枝枝長頻度分佈峰值偏左，葉片短而狹，長寬比大；與之相比，分佈於半固定沙丘的灌叢當年枝平均長度增加較快，長枝條比例較高，葉片長而寬，長寬比小；固定沙丘上的上述特徵大致介於二者之間。
  3. High - frequency carrier wave characteristics analysis for 10 kv power distribution lines

    配電線高頻載波特性分析
  4. Second, this paper analyzes the time - frequency distribution of the clutter from airborne pulse doppler radar ( pdr ). the side - lobe clutter, which is the main factor to influence the pdr, is analyzed and calculated. based on the simulation of typical geometry of the land, we analyze and discuss the side - lobe clutter and concluded that the dft of can be considered as the phase of the coho

    並且根據各種典型地貌的近似模擬，從統計特性上和頻率域上對脈沖多卜勒雷達的旁瓣雜波進行了分析討淪，還得出脈沖多卜勒雷達的dft可以近似地看作相參積累，並在程序的編制中利用了這一個結論。
  5. One way we can compress data is to use a frequency table or a frequency distribution.

    壓縮資料的一種有效方法是編制頻率表或頻率分佈。
  6. Following this analytical framework, we conducted an investigation into the explicit and conventionalized legal speech acts as used in english legislative discourses in terms of their functions, realization, distribution and frequency. the general pragmatic principles of forensic communication and the features of legal discourses are also discussed in this paper. directed by professor mao junchun

    文章首先簡要地討論了法律語言的一般語用原則、特點和與法律言語行為有關的理論，然後分析了法律言語行為的功能、分類，最後分析了法律言語行為在英語立法語篇中的實施情況以及各類言語行為的分類和分佈。
  7. On the basis of investigation and research about the technology of reconstruction for ict image up - to - date, this paper is devoted to develop an algorithm for image reconstruction based on wavelet theory. in this paper, time - frequency distribution for spatially varying filter was used to construct convolve - kernel by dwt, to modify convolve - back - projection algorithm

    本文在國內外有關ct圖像重建的研究狀況基礎上，根據小波分析理論，利用小波變換在時頻空間的可變性，用dwt變換構造卷積核，對卷積反投影演算法做了改進。
  8. Ofta has issued a notice earlier to the satellite master antenna television ( smatv ) licensees, class licensees of in - building telecommunications systems, operatorsowners of in - building coaxial cable distribution systems ( ibccds ) ( including communal aerial broadcast distribution ( cabd ) systems, closed circuit television ( cctv ) systems, cable television ( ctv ) systems ) to alert the residents that they might need to adjust their vcrs or other equipments to avoid using channel 35 and 37 as radio - frequency ( rf ) output channel for connection to the television sets

    電訊管理局已就此事向本港衛星電視共用天線系統牌照持牌商、樓宇內置電訊系統類別牌照持牌商，以及大廈內同軸電纜系統營辦商擁有人（包括共用天線分佈系統、閉路電視系統、有線電視系統）發出指引，呼籲有關單位提醒其用戶如有需要可調整錄影機或其他器材，避免使用頻道35及37作為接駁電視機的訊號接收頻道。
  9. Such classes are separated by "natural breaks" in the frequency distribution or the analogous cumulative curve.

    這樣的級可由頻率分佈或類似的累積曲線中的自然斷點劃分開來。
  10. A cumulative frequency distribution enables us to see how many observations lie above or below certain values.

    累計頻率分佈反映在某個值以下，或在某個值以上有多少個觀察值。
  11. A frequency distribution shows the number of observations from the data set that fall into each of the classes.

    頻率分佈反映出落入每一組的觀察值個數。
  12. First, the theory of fretting wear and studies on fretting fatigue were introduced and the parametric method was used in the process of creating the model of dovetail joints in ug software. the elastic contact problem is analyzed in finite element method ( fem ) and is used to the parameters " distribution and contact stress of the joint are obtained on the base of ansys code. with the effect factor of load frequency, the prediction method of fretting fatigue life of dovetail joint under low and high / low cycle complex load is proposed

    本文介紹了微動損傷的機理和微動疲勞壽命的研究方法；利用ug軟體對燕尾榫聯接結構創建了參數化實體模型；基於ansys軟體平臺求解彈性接觸問題，獲得了榫聯接結構接觸應力及接觸狀態量的分佈；在已有微動疲勞壽命預測模型的基礎上，引入載荷頻率影響因子，對低周、高低周復合載荷作用下的燕尾榫聯接結構進行了微動疲勞壽命的預測，與試驗結果對比表明採用本文提出的方法預測榫聯接結構的微動疲勞壽命是有效的。
  13. Based on the observed runoff data, more accurate designed flow to a culvert or a small bridge may be obtained by curve fitting on frequency curve of pearson type iii distribution

    精度較高的橋涵水文設計是基於所在地實測的徑流資料，採用頻率曲線的適線法獲得。
  14. The frequency curve of transverse distribution of the wheel track on divided ways reveals that the frazzled damage of highly channelizing expressway cement concrete pavement largely occurs in the peak range of distribution curve of the wheel track

    摘要分車道行駛輪跡橫向分佈頻率曲線顯示，渠化程度較高的高速公路水泥混凝土路面磨損破壞主要集中在行車道輪跡峰值范圍。
  15. Curve a might represent the frequency distribution of the number of days' supply on hand in the perishable grocery business.

    曲線A可用以刻畫食品商人手中易霉貨物儲備天數的頻率分佈。
  16. Research on the universality of k - mer frequency distribution in genomes

    頻數普適關系的研究
  17. Compound frequency distribution

    復合頻率數分佈
  18. There are two important questions : one is what is the properties of the seismicity before the earthquake, the other is about the character of the aftershock sequence. the completeness of the catalogue of earthquakes with magnitude over 3. 0 can be confirmed by different independent tests such as minimum magnitude distribution, frequency - magnitude distribution and the rydelek - sacks test

    本文用最低震級分佈、震級頻度分佈和rydelek - sacks檢驗等方法分析了格爾木單臺、青海省地震臺網和格爾木臺陣記錄到的本次地震的餘震序列，確認餘震的記錄對于m _ l3 . 0級以上的地震是完整的。
  19. Our research analyzes comprehensively the sand data, such as thickness distribution, velocity distribution, frequency distribution of sand incipience velocity, expatiates the behaviors of these two sand incipiences in wind - blown - sand flow, then our research amends some deficiency of relative researches

    本文全面分析了沙粒濃度分佈、速度分佈和沙面上起動沙粒速度參數的頻率分佈等，闡述了兩種沙粒起動方式在風沙流中的不同表現，並對相關研究資料中的不足進行修正。
  20. The reason that different distribution frequency of hpi in various e. coli is unclear, either. as the high frequency distribution of hpi in eaggec, this study will focus on the following parts to discuss the function of yersiniae high - pathogenicity island in enteroaggregative e. coli

    鑒于hpi在eaggec中的高頻分佈，本研究擬從eaggec菌株出發，著重從以下幾個方面對eaggec攜帶的hpi毒力島的功能進行了研究。
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