突變速率 的英文怎麼說

中文拼音 [tūbiànsùlǜ]
突變速率 英文
mutation rate
  • 突 : Ⅰ動詞1 （猛沖） dash forward; shoot out 2 （高於周圍） protrude; bulgeⅡ副詞（突然） abruptly; sud...
  • 速 : Ⅰ形容詞（迅速; 快） fast; rapid; quick; speedy Ⅱ名詞1 （速度） speed; velocity 2 （姓氏） a surna...
  • 率 : 率名詞（比值） rate; ratio; proportion
  • 突變 : 1 （突然急劇的變化） sudden change; change suddenly; transilience; accident; saltation; revulsion...
  • 速率 : speed; rate; tempo
  1. For the tectonic coal ， the properties of higher porosity and lower permeability make it capable of keeping higher gas pressure ； both of the “ isolating action ” and “ gas - cushion action ” cut down the resistance against outburst ； the specifity of high - defomed - extent makes desorption ， escape and flowing quickly become possible ； the existing of weak - seam or “ thoroughfare - seam ” create suitable conditions for the initial erupting and continued developing of coal and gas outburst. on the whole ， it is the synhesis action of all factors ， which leads to outbursts. the existing of tectonic coal with certain thickess is the essential condition of coal and gas outbursts ， but not the sufficient condition

    高空隙率、低透氣性使構造煤能夠保持較高的瓦斯壓力；破碎性、 「隔離」作用及「氣墊」作用，使構造煤抵禦外力作用的能力大大降低；構造煤變形幅度大的特性，為瓦斯的迅速解吸、放散和快速流動創造了條件；構造煤薄弱分層或「通道層」的存在，則為煤與瓦斯突出的初始激發和持續發展奠定了基礎；上述因素的共同作用，影響和制約了煤與瓦斯突出的強度和分佈.盡管如此，一定厚度的構造煤的存在只是發生煤與瓦斯突出的必要條件和有利條件，而非充分條件
  2. The type, direction and frequency degree of land use change not only reflect the process of the space - time dynamic change of the earth ' s surface landscape and become the most salient landscape mark of the earth surface system, but also become the base of rebuilding the equilibration of land use - ecosystem - productivity

    土地利用變化類型、變化方向和速率以及變化的頻繁程度不僅反映了地球表面景觀的時空動態變化過程，成為地球表層系統最突出的景觀標志，而且還成為了重新建立土地利用? ?生態? ?生產均衡的基礎。
  3. The turbulent flow in open channel is tested with laser - doppler anemometer, in which the longitudinal time average velocity and fluctuating velocity of turbulent flow in open channel under the conditions of the sudden changes of roughnesses at different water depths are measured

    摘要通過激光測速儀，對壁面糙率突變時的明渠紊流進行試驗，測量了糙率突變不同水深情況下明渠紊流的縱向時均流速和脈動流速。
  4. Simulations with respect to two models, prove that the method can track the frequency accurately and instantly, and have the preferable effectiveness on the abruptly fluctuating - frequency power signals, at the same time, this method overcomes the constraint of synchronous sampling and has the better astringency with different initial frequency

    針對兩種模型進行模擬，表明該方法能夠較為精確與快速地跟蹤電網頻率，尤其針對突變頻率的信號，具有較好的跟蹤效果；同時演算法克服了同步采樣條件的限制，通過迭代，在不同初始頻率下均具有較好的收斂性。
  5. Dr jablonski ' s study does not, for instance, help to answer whether the tropics are a wellspring of species because a hotter climate brings a higher mutation rate, or because more intense interactions between species select for more rapid evolutionary change

    例如，捷布朗斯基博士的研究未能解答究竟是因為氣候更加溫和導致更高的突變率，還是因為種間相互作用更強加速了進化上的改變，從而使得熱帶地區成為物種的發源地。
  6. We also analyze the influence of the boundary condition 、 safety distance and deceleration probability to the traffic flow. finally, we propose an crossroad modle. this model is made up of one main road and one branches ： traffic with lights placed on the crossing, vehicles " breaking while running and turning to other direction while jamming. we investigate the velocity and flow of the model when the initial density, the brake and turning probabilities, the green to signal ratio are changed. then the reasons causing all the kinds of phenomena are analyzed

    最後研究了周期性邊界條件下的十字路口的ca模型，該模型由一條主幹道和一條支道組成，在幹道與支道的交叉路口設置紅綠燈，車輛在運行中對突發事件發生反應的剎車，路口的車輛可以轉向等各種實際交通行為，並通過計算機模擬，研究模型在改變車輛的初始密度、剎車概率、轉向概率、紅綠燈信號的綠信比等各種情況下支、主幹道車輛的速度、流量的變化，並分析在各種情況下交通狀況的成因，提出改善交通的有效措施。
  7. Secondllv in the 1 d random traffic flow model. the relation function between the correlation and the creation. disappearance. brake probabilities of the vehicles is presented. according to the statistical mechanical approach to the spatial correlation functions. the theoretical results agree with that of the computer simulation. thirdh. based on the bml model. a main - road traffic flow model with two speeds on two dimensions is designed. this model simulate the traffic situation of one main road and several branches in the cit traffic lights placed on the crossing. vehicles breaking ~ vhile running and turning to other direction while jamming. we investigate the ~ ' e1ocitv and flo ~ ~ of the model when the initial densitvthe brake and turning probabilities. the green to signal rati3. thc number of the branches and the period of the signal are changed. then the reasons causing all the kinds of phenomena are analvzed. finallv. we simulate the bml model using the method of lattice boltzmann which ~ vas brought out by liu mu - renand obtain the velocity - density graph similar to the previous result. the upper critical densiw above which there are oniv jamming configurations. and the lo ~ ver critical density below which there are only moving configurations are the same as before. the boltzmann function which is on the lattices shows the moving and jaxmning transition obviouslv. thus it proves the possibilit of this method on the traffic research

    接著，建立了和研究了二維二速的主幹道模型，該模型模擬了城市交通中一條主幹道，多條支道的交通情況，在幹道與支道的交叉路口設置紅綠燈，車輛在運行中可以有對突發事件發生反應的剎車，在發生堵塞時，路口的車輛可考慮通過轉向來緩解交通等各種實際情況的發生，給出了車輛演化的演化方程，並通過計算機模擬，研究模型在改變車輛的初始密度、剎車概率、轉向概率、支道數、紅綠燈信號的綠信比、紅綠燈信號周期等各種情況下支、主幹道車輛的速度、流量的變化，並分析在各種情況下交通狀況的成因，提出改善交通的有效措施。最後，在劉慕仁提出的用格子boltzmann方法研究一維決定論交通流的思路下，將此法推廣到對二維bml模型的模擬上，得到了與用以往方法的研究結果相類似的速度-密度圖線，且車輛從運動相到堵塞相轉變的上下臨界密度是一致的，同時分別給出車輛在處于暢通相和堵塞相時， boltzmann函數在格子上的分佈情況，進一步驗證了此法的可行性。
  8. The results were as followed : pollen germination and tube growth were decreased in ga mutant, and increased in ga overexpression strains as compared to wild type, while pollen germination and tube growth were not affected in gp mutant

    結果表明：體外實驗中gpa1突變體花粉的萌發率及花粉管生長速率均低於野生型花粉，而超表達g花粉的萌發率及花粉管生長速率則高於野生型及空載體對照； g突變體agb1 - 1與野生型花粉的萌發率及花粉管生長速率差異不大。
  9. Engine operating conditions cold be changed quickly and are very bad sometimes, such as : from suddenly cranking to driving in winter, acceleration to sudden torque demand. in the light of zero emission vehicles, in order to achieve better hot efficiency, maximum power, higher safety and best emission, engine controls become more and more difficult. automotive engines are typical nonlinear, time - delay, time - varying parameter systems

    汽車發動機使用環境變化大，使用條件有時非常惡劣，從寒冷的冬天突然啟動進入行駛狀態，行駛過程中的突然加速，急劇的扭矩變化等等，在這樣的條件下，為了使其熱效率、輸出功率、行駛性、安全性和排氣清潔性處于最佳狀態，給汽車發動機的控制帶來了極大的困難，特別是零排放汽車排放標準的提出，對發動機控制提出了更高的要求。
  10. In the measurement of the high density resistivity method, there is often some false data in the data section because of the influence of poor earth contact of electrodes and other interference factors etc., which can cause false abnormality of data section and make data interpretation difficult

    摘要針對在高密度電阻率法測量過程中，數據斷面易出現突變點，而造成電阻率擬斷面圖虛假異常，難以準確解釋的情況提出了一種快速、高效的剔除突變點的方法。
  11. The analysis revealed that the sars - coronavirus was mutating continuously throughout the epidemic. the estimated mutation rate of the virus, however, is one - third that of the virus responsible for the acquired immunodeficiency syndrome ( aids )

    分析結果顯示sars冠狀病毒雖然演變迅速，但sars冠狀病毒基因組的中性突變率只是愛滋病毒基因組的突變率的三分之一。
  12. It adapts to the cdma system and achieves multi - rate speech coding and decoding. source and mode control are combines in smv for rate selection, so it improves the flexibility of cdma system, it will allow cdma subscribers to enjoy superior quality while allowing service providers to increase capacity as needed. smv is regarded as a breakthrough technology that provides significant capacity and quality gains on cdma systems, so the researching of smv is of great practical value

    可選模式聲碼器（ smv ? selectablemodevocoder ）是3gpp2最新的用於寬帶擴頻cdma通信系統的變速率語音編碼標準，它實現了語音的多種低速編碼和解碼，在速率選擇上將源控和模式控制相結合，提高了cdma系統的靈活性，可以在保證高質量語音的同時盡可能增加系統的容量，被認為是變速率語音編碼在cdma系統中應用的「突破性」技術，代表了當前語音編碼發展的方向和潮流，因此smv的研究具有很大的價值。
  13. Based on the measured data, the change of the friction velocity of turbulent flow and the characteristics of the wall shear stress under different sudden roughnesses and different water depths are analyzed herein

    通過實測資料分析不同糙率突變和不同水深的紊流摩阻流速變化情況和水流的壁面切應力的特點。
  14. Climacteric the rise in respiration rate, found in the fruits of some species, associated with fruit ripening and senescence. it may be induced artificially by treatment with ethylene ( ethane )

    呼吸躍變（呼吸高峰） ：當果實成熟到一定程度時，呼吸速率首先降低然後突然增高，最後又下降，此時果實便進入完全成熟期。這個呼吸高峰便稱為呼吸躍變。用乙烯人工處理可以誘導呼吸躍變。
  15. Finally the paper analyses and measures the miracle of chinese economic growth to make the conclusion : during the more twenty years since the opening and reform, the economic growth of china has evidently demonstrated the character of leapfrogging - oriented growth. on the economic growth of china, the component of capital deepening has basic effect, and the component of efficiency enhancement has evident effect, however, the component of technology innovation has little effect. such growth pattern accommodates present economic development stage of china, and with the transition of the stage, growth dynamic must transform correspondly

    論文最後對中國自身的「增長奇跡」進行了解讀和測度，得出基本判斷為:改革開放以來20多年的中國經濟增長已明顯呈現出了蛙跳型增長的特徵，為一世界經濟發展史增添了持續快速增長的「中國故事」 ;中國的經濟增長中資本深化起了基礎性的作用，技術效率提高的因素也十分明顯，而技術創新的作用還不是十分突出，這種增長格局與我國現今的經濟發展階段是相適應的，但隨著我國經濟發展階段的轉換，增長動力也必須相應的變換。
  16. Our scheme decreases l - 2db required eb / i0 relative to variable - power fixed rate transmission. we also show that this combined scheme avoid large errors occur. this allows the interleaving depth to be reduced

    相對固定速率可變功率的傳輸方式，我們給出的方案使系統所需信干比eb io降低1 - 2db ，同時避免大塊突發錯誤的產生，降低了交織深度。
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