useful time 中文意思是什麼
useful time
解釋
使用壽命, 有效時間-
It is the first time that the theory of wavelet has been applied in the signal processing of the codog power plant experiment rig and wavelet transform denoising was used, it may keep the aiguille and saltation parts, wipe off the noise and pick up the useful signal, it is benefit to analysis the result in experiment
把小波分析理論應用於codog實驗臺信號處理中，用小波變換進行信號消噪，可以很好的保存有用信號中的尖峰和突變部分，將信號的噪聲部分去除，從中提取出於有用信息，更有利於實驗結果分析。 -
The main content of this article are the theories of fuzzy control system and data acquisition system for micro aerial vehicle. we can let a aeroplane model aviate with some sensors and one microcontroller, at the same time, the remote control is used. when the model make a landing, we could get some useful data from the model
在信號採集系統的基礎上，對微型飛行器模糊控制系統的具體實現進行了探討，並分析了單片機與pc機串列通信的方法，進一步強調信號採集系統與模糊控制系統之間綜合設計的合理性和必要性。 -
Data mining, which has been considered as a important methods in the analysis of time series, received more attention came from boffin. data mining is a process which get the useful information from the vast 、 incomplete 、 noised 、 fuzzy and random data
數據挖掘技術是從大量的?不完全的、有噪聲的?模糊的、隨機的數據中，提取隱含在其中的?人們事先不知道的?但又是潛在的有用信息過程。 -
Augusto lopez - claros, the lead author of the wef scompetitivenessindex, said the rankings were most useful inspotting big changes incountries overall scores and spottingtrends over time
洛佩斯-克勞克斯augustolopez - claros表示，排行榜最有用之處在於，可以察看各國總分的明顯變化，了解長期趨勢。 -
Range estimates from the foretop would not have been very useful at that time, especially given the decimated gun crews and difficulties relaying data. ( flags were probably used from the foretop to the gun )
這種測距方式並不精準，特別是在船身劇烈搖晃或者是火炮煙硝阻礙觀測視線的時候。 ） -
Information in time. and we would contact you forwardly if we think your information is useful to us
如果有需要，我們會主動與貴單位聯系。 -
A very useful quantity is the half-time for the reaction.
一個很有用的量是反應的半衰期。 -
It is generally impossible to obtain the analytic optimal guidance law for complex nonlinear guidance systems of homing missiles, and the open loop optimal guidance law is often obtained by numerical methods, which can not be used directly in practice. the neural networks are trained off - line using the optimal trajectory of the missile produced by the numerical open loop optimal guidance law, and then, the converged neural networks are used on - line as the feedback optimal guidance law in real - time. the research shows that different selections of the neural networks inputs, such as the system state variables or the rate of los ( line of sight ), may have great effect on the performances of the guidance systems for homing missiles. the robustness for several guidance laws is investigated by simulations, and the modular neural networks architectures are used to increase the approximating and generalizing abilities in the large state space. some useful conclusions are obtained by simulation results
對于復雜的非線性導彈制導系統，很難求得其解析的最優制導律，只能求得開環的數字解，不能適用於具有時變不確定性的導彈制導系統.利用神經網路的學習和推廣能力，對開環的數字最優制導律進行離線的學習，作為閉環的神經最優制導律在線應用.研究分別選擇系統狀態變量和視線角速率等不同的神經網路輸入對制導系統性能的影響，以及各種制導律的魯棒性問題，並採用模塊化神經網路結構提高神經網路的學習和推廣能力，模擬結果得到一些有益的結論 -
Based on the one and a half year " s lucubration, the author gets one new error concealment way with better combination between efficiency and running time in processing the errors in video communication. according to the experiment results and relative data analysis, we can get a certain conclusion, which is that the algorithms are correct and useful
課題在開放的h . 263測試模型tmn8中實現了該演算法，實現過程包括誤碼的檢測，定位和誤碼部分數據的恢復等工作，並與標準h . 263的結果進行了比較，模擬結果表明，經檢錯和掩蓋之後，解碼圖像質量有了顯著的改善，證明了演算法的正確性和實用性。 -
Fractal coding has been proved useful for image compression. it is also proved effective for content - based image retrieval. in the paper, we present a block - constrained fractal coding scheme and a matching strategy for content - based image retrieval. in this coding scheme, an image is partitioned into non - overlap blocks of a size close to that of a query iconic image. fractal codes are generated for each block independently. in the similarity measure of fractal codes, an improved nona - tree decomposition scheme is adopted to avoid matching the fractal codes globally in order to reduce computational complexity. our experimental results show that our coding scheme and the matching strategy we adopted is useful for image retrieval, and is compared favorably with other two methods tested in terms of storage usage and computing time
分形編碼在圖像壓縮方面取得了很好的效果，同時，分形編碼也能夠用於基於內容的圖像檢索.本文提出了一種基於塊限制的分形編碼演算法和匹配策略，並將它們用於圖像檢索.在我們編碼演算法中，圖像會被預先分成互相不重疊的子圖像塊，然後對這些子圖像進行獨立地分形編碼，從而獲得整幅圖像的分形碼.該編碼演算法能夠在很大程度上減少編碼時間.在進行圖像間相似性的匹配時，我們採用改進的基於九叉樹的分配策略，從而避免全局地進行分形碼的匹配，減少了計算量.實驗結果說明，我們的編碼演算法和匹配策略能夠比較有效地應用於基於內容的圖像檢索，在計算時間和存儲時間上都優于實驗中其它兩種方法 -
We can use the mm5 model in definite time, definite area weather forecasting. we conclude that : : the moving route of this necw in its developing progress was direct - south along latitude, the cold air is rough, and just this made the rough vertical velocity ; the necw southern moving and conflicting with the west pacification sub - tropical high makes rough jet steam. the plenty south - west warm and wet air made by the jet stream gave the rainstorm demanded vapor ;. the rough vertical velocity by jet stream is a main reason in this rainstorm ; the mm5 model uses four - direction analysis data as its input, this avoids some errors occurred in observe and transfer, thus made the result more useful
綜合分析認為： （ 1 ） 、這次冷渦在其發生發展過程中，其移動路徑是沿經圈直線南壓，攜帶的冷空氣勢力較強，形成槽后較強的垂直運動； （ 2 ） 、西太平洋副熱帶高壓偏北位置與東北冷渦南壓形成的急流軸，把源源不斷的西南暖濕氣流輸送到遼西地區，也就是急流軸的左前方位置，為這次暴雨的產生提供了充足的水汽來源； （ 3 ） 、低空急流不但為暴雨輸送水汽，其造成的較強的垂直環流也是產生強降水的一個主要原因； （ 4 ） 、 mm5模式以四維同化資料作為初始場，最大限度地避免了觀測誤差可能造成的積分不穩定，提高了模擬結果的參考價值。 -
To prevent magnetic leak, improve the abrasiveness and the anti - eroding ability, the author have spent lots of time in researching the hot spraying method and acquired many practical useful data and experience
為了防止泄漏，增加活塞桿的耐磨性和抗腐蝕性，本文還對熱噴塗工藝進行了研究，並摸索出了大量實際有用的數據及經驗。 -
Such a program had perhaps served a useful purpose at one time, but it was now the chief intellectual stumbling block.
這樣一個綱領，也許一度起過積極作用，但現在它是使知識界躊躇不前的主要障礙。 -
The effect of local oscillator syntonization error and triggering time synchronization error on bistatic sar imagery are analyzed based on their error models. useful simulation results are provided for system design
本文重點研究了雙基地sar本振相位同步誤差與觸發時間同步誤差對成像的影響，建立了誤差模型，給出了模擬試驗結果，為系統設計提供了參考依據。 -
In this system, the movement of the step - electromotor is controlled by computer, and then the dial pointer is drove by the step - electromotor. at the same time, these images of the analog instrument are took by high precision ccd video, and then these images will be processed by the computer, using some image - processing algorithms such as image segmentations, threshold identification, image binarization, areas labeling, dial center - point identification, useful areas identification & abstracting, and areas thinning, etc. followed this, the dial pointer of the “ circle ” is able to be located. at last, the dial pointer position will be recognized by the computer
本系統由計算機控制步進電動機的運動，進而驅動指針式儀表表針的運動，並且通過高精度ccd攝像機實時獲取表盤圖像數據，同時進行表盤圖像的相關處理，包括圖像分割，閾值確定，圖像二值化，區域標記演算法，圓心擬合，有效區域識別提取，區域細化等，最終快速識別出表盤指針所處位置;最後，根據國家指針式儀表類檢定規程所制定的演算法計算出該儀表的相關誤差，檢定指針式儀表的各種精度，通過這些數據判斷該儀表是否合格，列印該儀表的檢定結果報表。 -
From the viewpoint of resource demand, ocean multi - wave exploration is a useful technology to resolve the difficult problem just as blur zoon, structure distortion and gas pollution etc. because of the monopolization by developed countries with high price and high technology, the developing of our ocean multi - wave exploration technology has been baffled for a long time
從我國油氣資源來看，海上多波地震是解決海底模糊帶、構造變形和氣污染等問題的有效技術。由於西方國家對我國的高價壟斷和高技術封鎖，使我國海上多波勘探技術的發展受到了嚴重製約。 -
According to description of these most powerful news groups which once raised a storm of revolutionary, the author want to catch and show the touchable aile and trail to provide useful reference to the news groups of present age this article is stringed by time, and divided into three periods from angle of history, or the rising period before the first world war, the forming period between the first and the second world war, the developing period after the second world war
文章的「點」恐怕還不足以完全達至歷史的每一處，但作者希望通過描述那些曾在報業史上呼風喚雨，掀起革命性風暴的報團，捕捉和展示其中猶可觸摸的規律和痕跡，對今天發展到新階段的報團提供有益的借鑒。既為治史，當向讀者展示一個脈絡清晰、事實豐滿的局部世界。本文的主線由時間串聯，把報業集團的歷史進程分為三個階段：戰前的起步階段，兩次世界大戰期間的形成階段，二戰后至今的發展階段。 -
The useful life curves of gan - based blue led with al2o3 and sic substrate is fit single exponential function [ i = i1 + i2exp ( - t / ) ]. fron this function, we could get aging information of led about stable inteneity 1, decay intensity i2 and decay time. the novel method of evaluating aging properties of leds was put forward
用單指數函數擬合了發光二極體的光衰減曲線[ i = i _ 1 + i _ 2exp （ t / ） ] ，這個關系式可以給出三個信息：穩定光強、衰減光強、衰減速度，提出了更加合理的評價led老化性能的方法。 -
Due to we e ure the product quality of co truction, which reduces the direct cost of our partner, and we also develop the useful time that saves much maintenance costs, which brings owners large economic benifit. of course from which we also win a large of sum invisible a et which is the magic weapon which we take advantage of to be succe ful in the keen market competition
由於我公司保證了施工產品的質量，不但降低了甲方生產的直接成本，而且由於提高了產品的使用壽命而大大節省了維修費用，從而給業主帶來了巨大的經濟效益，我們從中也獲得了一筆豐厚的無形資產，這些就是我們在激烈的市場競爭中取勝的法寶。 -
It can extend the useful time of the lye inside the bottlewasher 1 - 3 times and even more after using the lye recycling purifier
使用堿液回收過濾機后能夠延長洗瓶機堿液使用時間1倍? 3倍，甚至更多。
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