time-average output 中文意思是什麼
time-average output
解釋
時間平均輸出-
By investigation on the relationship between period, quantity, extend of ostrinia furnacalis emergence and meteorological factors in qiqihaer, this paper analyzes the factors which effect on period, quantity, extend of ostrinia furnacalis about annual wave. the beginning time of ostrinia furnacalis pupae emergence depends on average temperature in may and june, weather conditions in july decide whether ostrinia furnacalis pupae finish ahead of time ; the beginning time of eclosion is decided by average lowest temperature and precipitation in may and june, and the end time of eclosion is decided by average lowest temperature in june and july, meantime, the length of time of ostrinia furnacalis eclosion and time of grub emergence influence on the extent of ostrinia furnacalis. an important condition of a great emergence of ostrinia furnacalis is that how temperature matchs humidity, which substantially result in reduction of maize output
本研究項目通過對齊齊哈爾市玉米螟發生期、發生量、發生程度與氣象條件關系的分析，找出玉米螟發生期、發生量、發生程度年際波動的影響因子： 5 、 6月的平均氣溫決定了玉米螟化蛹開始的早晚， 7月的天氣條件決定玉米螟化蛹是否提前結束； 5 、 6月的平均最低氣溫和降水則決定羽化開始的早晚， 6 、 7月的平均最低氣溫又決定了玉米螟羽化結束的早晚；而玉米螟羽化持續時間的長短和幼蟲發生的早晚影響了玉米螟的發生程度；溫濕條件配合適當與否是促使玉米螟大發生的重要條件，玉米螟大發生又會引起玉米的大幅度減產。 -
2, under equally see the quantity, compress the calculate way s exportation code plain deal connect the good and bad that decide its function of the good and bad, or say, output the code the term of same alike rate the bottom, and the portrait quantity reflected the function of the compression calculate way. adopt with dv all because of the m - jpeg an inside compress the way, efficiency of their compression certainly want lower than mpeg2. certainly, this is an average circumstance, at the time that low code rate, the mpeg2 can compare the m - jpeg compression the ratio high and a lot of but keep the good diagram to resemble the quantity ; but at request the diagram to resemble the quantity the good time for example the sow the room program edit with empress period creation, their difference to is not very big. too is to say, just at the compression efficiency that not emphasize the portrait quantity that the circumstance, mpeg2 is high
2在同樣的視頻質量下，壓縮演算法的輸出碼率直接決定其性能的優劣，或者說，輸出碼率相同的條件下，圖象質量的優劣反映了壓縮演算法的性能。由於m - jpeg和dv都是採用幀內壓縮方式，它們的壓縮效率當然要比mpeg2低。當然，這是一個平均情況，在低碼率的時候， mpeg2可以比m - jpeg的壓縮比高很多而保持較好的圖像質量而在要求圖像質量很好的時候比如演播室節目編輯和後期製作，它們的差別不是很大。 -
This paper presents a theoretic analysis of the temporal characteristics of output buffer in switch, gives the probability distribution function of delay and average queuing time, and compares the end - to - end delay between traditional and switched ethernet. vlan is one of important technologies that switch has to implement. switch has to rapidly and efficiently find and maintain an un - looped topology
在建立交換機的延遲模型基礎上，推導出輸出緩沖延遲分佈、隊列大小等特性；接著比較傳統總線型以太網和交換式以太網的端到端延遲，為交換機以及交換式以太網的設計和分析提供可靠的理論基礎。 -
At the same time, structure revise of homemade nc machine tools have produced a market effect. annual average output and a market consume of nc machine tool, in whole country, respectively grow at speed of 18 % and 25 % in ten years
同時，國產數控機床產品結構調整已見成效，十年間，中國數控機床產量和市場消費量分別以年均18和25的速度增長。 -
One - cycle control technique is conceived to control the duty - ratio d of the switch in real time such that in each cycle the average value of the chopped waveform at the output diode of the switch rectifier is exactly equal or proportioned to the control reference. it can eliminate automatically instantaneous error in every one cycle and the error belonging to the former cycle ca n ' t be brought to next cycle
單周期控制技術的基本思想是控制開關的占空比，在每個周期內強迫開關變量的平均值與控制參量相等或成比例，它能在一個開關周期內自動消除瞬態誤差，前一周期的誤差不會帶到下一周期。 -
On the basis of fault classification, the output voltage waveforms are divided into sub - waveforms by the counts of rectifier voltage pulse waves, then the sub - waveforms are further classified by real time measurement of voltage, taken from sub - waveform sampling points ' average values and standard deviations, thus tin fruit waveforms can be described by pattern vectors
在對各種故障進行分類的基礎上提出根據整流電壓的脈波數將輸出波形分段，通過即時監測各波段電壓采樣均值和標準差，對各段電壓波形進行分類，從而將故障波形用模式向量表示。 -
Frequency - domain equalization. at the same time discusses some key problems in ofdm : high ratio of peak - to - average power of output signals, problem of synchronization, channel estimation, adaptive bit, power and subcarrier allocation. emphasize on channel estimation, and present a new algorithm which can filtering more interpolation errors and noise. for the sake of improve the performance of resist narrowband noise and make efficient use of the spectrum apply malvar wavelet division
同時就ofdm系統中的一些關鍵問題如峰值平均功率比（ papr ）太高，同步問題，通道估計，通道、比特與功率必須動態分配進行了研究，著重研究了通道估計問題並提出一種改進的方法，能濾除更多的噪聲分量和插值誤差，提高系統的性能；為了提高抗窄帶噪聲的性能和提高通道利用率，用malvar小波變換實現了不等帶寬分配。 -
The thesis finds out the trend of the urbane land value fluctuation, and presents a reasonable prediction on the land value in three years " time on the base of the fact that the demands on land for different usages have been increasing since 1988 and the analysis of the relevant fluctuation diagrams which come from the basic land value in 13 metropolises and the historical indexes of it in hunan by the combinational ways of average insert and average output. while studying the way of keeping the land value balanced among different regions, the author analysis the basic land prices of 13 cities in a systematic classifying way and labels them with 4 levels according to their own characteristics. at the same time, the land values are measured by relevant index with the consideration about the economic situation in the whole society
本文在研究湖南省13個設區城市的基準地價和歷年地價指數的基礎上，通過平均插值法與外插法相結合的方法，求出各城市自1988年以來各年度各類用途土地的漲幅，在此基礎上擬合出地價趨勢模型，分析對應的變化曲線，根據各城市地價的時間分佈特徵對未來三年內的地價做出預測；本文在研究區域地價平衡時，首先採用系統聚類的方法對各城市的基準地價進行聚類分析，最終將13個城市按照其地價特點分成了4個層次；其次採用相關系數度量各城市地價與其他社會經濟發展變化的相關性。 -
The operation principle of boost pfc converter was analyzed ; and the emulation model of boost pfc module under the average current control was set up. a novel method to sample synthetically the input current and output current was put forward in the text. this can realize the current sampling for the control of pfc and current sharing at the same time
分析了boostpfc變換器的工作原理，建立了基於平均電流控制的boostpfc模塊的模擬模型；提出了一種新穎的輸入輸出電流綜合採樣方法，可同時實現pfc控制和均流控制的電流采樣；建立了並聯系統的模擬模型；研究設計了基於平均電流法的並聯控制方案及實現電路。
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