落下次數 的英文怎麼說
中文拼音 [làxiàcìshǔ]
落下次數
英文
drop number-
Shortwave channel is time varying transmission channel. it has dispersion in frequency and time domains. this characteristics hinds the data transmi - ssion at high speed and the correction of received data. in this dissertation i have analyzed the statistic characteristic of shortwa - ve channel, established the model of shortwave channel and simulated the rayl eigh fading distribution. the technology of spreading spetrum has been proved that it has the capability for anti - multipath and discerning multipath
在短波通信中，由於通道的時間色散和頻率色散，引起多徑展寬和多徑衰落，前者限制了數據的傳輸速率，後者造成短波數據通信中出現突發錯誤，為了解決多徑效應對短波通信的影響，本文所做工作如下：首先詳細分析了短波通道的統計特性，建立其數學模型；其次分析了擴頻通信的特點，從理論上證明擴頻技術不僅具有抗多徑干擾能力，而且具有分離多徑的能力；介紹了傳統的rake分集合併技術的特點。Russia improved version of the box, each box whereabouts of the three, with the majority of games similar to the box game, with han fei officials and mrs. p spent moving love story long. operations guide : the next adjustment box about the sequence and speed
俄羅斯方塊的改良版，每次下落三個方塊，與大多數方塊游戲類似的游戲模式，伴隨韓飛官和譚花磷的動人愛情故事源遠流長操作指南：上下左右調整方塊的順序和速度Introduction : russia improved version of the box, each box whereabouts of the three, with the majority of games similar to the box game, with han fei officials and mrs. p spent moving love story long. operations guide : the next adjustment box about the sequence and speed
攻略：俄羅斯方塊的改良版，每次下落三個方塊，與大多數方塊游戲類似的游戲模式，伴隨韓飛官和譚花磷的動人愛情故事源遠流長操作指南：上下左右調整方塊的順序和速度Imagine a hotel built from thousands of tons of snow and ice, and re - built every winter - that is icehotel in the little village of jukkasjarvi in northern lapland, sweden
想象一下，一家旅館用數千噸冰雪搭建且每年冬天都要重建一次? ?而那就是坐落在瑞典拉普蘭地區北部的尤卡斯亞爾比村內的「冰旅館」 。The research result is following : the annual species richness index of studied forest plant community averaged 64. 688, the species diversity index was 2. 982. the proportion of every functional group of forest plant community is : herbaceous layer ( average is 68. 89 % ) > tall tree layer ( average is 15. 266 % ) > shrub layer. ( average is 15. 845 % ) the proportion of every functional group in forest insect communities is remarkably different, and the order of the proportion is herbivorous insect group ( average 0. 729 ) > predatory natural enemy insect group ( average 0. 136 ) > parasitical insect group ( average 0. 135 ). with seasonal change, the proportion of herbivorous and predatory insect group decreased obviously, while that of parasitical insect group increased on average by 147 %
研究結果如下：森林植物群落種的全年物種豐富度指數平均為64 . 688種，多樣性指數為2 . 982森林植物群落內各功能類群物種所佔比重依次為：草本層（平均為68 . 89 ） >喬木層（平均為15 . 266 ）灌木層（平均為15 . 845 ） 。森林昆蟲群落中，全年各功能類群所佔比重以植食性昆蟲類群為最大，平均佔0 . 729 ；捕食性昆蟲類群次之，平均佔0 . 136 ；寄生性天敵類群為最小，平均為0 . 135 。The species are the furthest abundant in mixed forest of evergreen broad leaf and deciduous broad leaf in middle altitude region ( from 500m to 1, 200m ) in two areas, followed by the mixed forest of coniferous leaf and broad leaf in middle altitude region ( from 1, 200m to 1, 600m ) of mangshan and the evergreen broad leaf forest in low altitude region ( under 500m ) of babaoshan. the biomass of the mollusca community is much bigger than any other areas and the superior species are quite apparent in low altitude region. the terrestrial mollusca are not discovered in high altitude region ( from 1, 600 to 1, 900 ) so far
中海拔區（ 500 1 ， 200m ）的常綠闊葉與落葉闊葉混交林帶陸生貝類物種最為豐富；次豐富的為莽山中海拔區（ 1 ， 200 1 ， 600m ）的針闊混交林帶和八寶山低海拔區（ 500m以下）的常綠闊葉林帶；低海拔區（ 500m以下）的常綠闊葉林帶陸生貝類的種群數量大，優勢種明顯；高海拔區（ 1 ， 600一1 ， 900m ）未發現陸生貝類。3 a novel recursive least - square ( rls ) blind space - time receiver algorithm based on the constrained condition, which can completely avoid the matrix inversion introduced into by constraints ( comparing with the normal rls ), is proposed for multi - path slow fading cdma channels. the computational complexity of this method is not only lower than that of the normal rls, but also lower than that of both lms and ls blind space - time receiver methods that are realized based on the rosen ' s gradient projection. and the speed of convergence of the presented rls blind space - time receiver algorithm is better than that of both lms and ls blind space - time receiver methods
3 、針對多徑慢衰落通道下ds - cdma盲空時接收機中線性約束二次規劃問題提出一種新的遞歸最小二乘演算法，該演算法完全避免因約束而引進的矩陣求逆運算（相對于常規的遞歸最小二乘演算法） ，不但運算量比常規的要低，而且比基於rosen梯度投影實現的最小均方（ lms ）與最小二乘盲空時接收機演算法還低，且收斂速度比基於rosen梯度投影實現的最小均方（ lms ）與最小二乘盲空時多用戶檢測都好，將提出的新的遞歸最小二乘演算法與提出的數據選擇方案結合起來可以進一步降低其運算量，具有很大的實用價值，最後通過模擬實驗進一步分析了其性能。The usual method is, to find a sub - missile disper firstsion center first from each group data of the sub - missile ' s falling point coordinate, then to estimate the parameters according to a few data of dispersion center using the classical statistic method
通常的方法由每次試驗的子彈落點數據獲得一個子彈散布中心，再由少數的幾個散布中心數據、運用經典的統計方法求散布中心的正態總體分佈參數，其不足之處在於小樣本條件下采偽的概率很高。The game is difficult to master the actual takeoff, to enable the surface of the whereabouts of the moment it is a plank of wood floating over the moment, the player can perhaps several pilot jumping from the press box key, mind a few seconds until the silence fell on top of the water, followed b
游戲的難度在於掌握好起跳的實際，要使得下落到水面的一剎那，剛好是木板漂浮過來的那一刻，玩家可以多多試驗幾次跳躍，從按下空格鍵開始，心裏默默數秒直至落到水面上方，隨后再對應木板的漂浮速度數秒即可。But no sooner down than up again, and a second and a third time and countless times he flew around the circle
可他剛一落下又飛了起來，然後便一次二次無數次地隨著圓圈飛旋。Compared with green light - emitting device, blue oled has many problems such as brightness, efficiency, stability, and color saturation, in this study we investgaited the blue oleds systemically : 1 ) double heterosturcture oled was charaterized. due to the introducing of electron transport layer alq3 and hole - blocking layer balq3, the energy matching was more reasonable and the carrier injecting was more effective in the double - layer device. the maximum efficiency and luminance of this device attained to 1. 90 lm / w and 10, 000 cd / m2, respectively
其次，由於一直以來藍光oled器件的研究處于相對落後的狀態，其發光亮度、效率、穩定性和色純度都無法綠光器件相比，所以本論文在以下幾個方面對藍光器件的性能進行了系統的研究: 1 ）研究了雙異質型藍光oled器件，由於本研究引入了空穴阻擋層，使得載流子的復合和激子的擴散被限定在發光層內，器件的發光效率達到了1 . 90lm / w ，最大亮度達到了10000cd / m2 ，比傳統結構器件的效率和亮度提高了約一個數量級; 2 ）制備了結構為ito / npb / balq3 / alq3 / mg : ag的oled器件，研究發現，當改變各有機層厚度時，器件的電致發光光譜發生了從綠光到藍光的移動。Remember once, i proceed from liking to play, buying a painting paper to binding originally, copying a few poem texts, the body flavor once the ancients write of fun, can be didn ' t expect see by classmate, result i am scolded well some kind of, the reason is mine " old soil "
記得有一次，我出於好玩，買了一本宣紙裝訂本，抄了幾篇詩文，體味一下古人書寫之樂趣，可不料被同學瞧見，結果我被好好地數落了一番，原因是我的「老土」 ！ 。With your hands and arms at your side and the ball firmly under the attacking arms armpit. . attack with your weapon of choice and strike as many times as possible before the rubber ball hits the deck and bounces once
手和手臂垂於體側，球牢靠地置於攻擊手腋下. . . . . .用你選擇的身體武器進攻，在橡皮球落地並彈跳一次之前攻擊盡可能多的次數！分享友人