起動因子 的英文怎麼說

中文拼音 [qǐdòngyīnzi]
起動因子 英文
initiation factors
  • 起 : 起Ⅰ動詞1 （站起; 坐起） rise; get up; stand up 2 （取出; 取走） draw out; remove; extract; pull 3...
  • 因 : Ⅰ動詞[書面語] （沿襲） follow; carry on Ⅱ介詞1 [書面語] （憑借; 根據） on the basis of; in accord...
  • 子 : 子Ⅰ名詞1 （兒子） son 2 （人的通稱） person 3 （古代特指有學問的男人） ancient title of respect f...
  • 起動 : start （a machine, etc. ）; switch on起動電動機 starting motor; 起動器 starter
  1. The cause that causes cerebral blood - vessel block basically has two kinds : it is a head thrombosis, it is the pathological changes as a result of cerebral blood - vessel itself, often make the film inside tubal antrum coarse because of sclerosis of appearance of cerebral artery congee, be in charge of antrum stricture, below certain condition, if blood pressure is reduced, blood stream is slow, blood sticks consistency heighten, the cruor factor such as plaque, condense inside blood - vessel agglomerate, form cerebral thrombus

    引起腦血管阻塞的原因主要有兩種：一是腦血栓形成，它是由於腦血管本身的病變，常因腦動脈粥樣硬化使管腔內膜粗糙，管腔狹窄，在某些條件下，如血壓降低，血流緩慢，血液粘稠度增高，血小板等凝血因子，在血管內凝聚成塊，形成腦血栓。
  2. 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。
  3. Rlean meat percentage is one of the most important economic traints in pig breeding programs. myostatin is a negative regulator of skeletal muscle growth. null or low activity of myostatin, individual muscle of mutant amimals would show a large and widespread increase in skeletal mass. myostatin null animals have significantly larger diameter or more quantity of fiber skeletal muscle. the phenotype was termed double muscling. in order to probe the relation between myostatin and high lean meat rate and plump - hipped trait, we sythesized the c ' 80 amino acids coding sequence of porcine myostatin and costructed the cloning and expressing vector of it

    肌生成抑制素（ myostatin ，即mstn ）是近幾年來（ mcpherrona . c等， 1997 ）發現的骨骼肌生長的負調控因子，它主要在骨骼肌中表達。其活性的喪失，會引起動物肌肉的過度發育，肌纖維直徑變大或肌纖維數增加，表現為雙肌癥狀。肌生成抑制素研究的突破將對豬、肉雞、肉牛等畜禽生產性能的提高具有特別重要的意義。
  4. The holoenzyme recognizes specific nucleotide sequences on the dna duplex(promoters).

    全酶還能識別DNA雙鏈分子上的特定核苷酸序列（起動基因）。
  5. The holoenzyme recognizes specific nucleotide sequences on the dna duplex ( promoters )

    全酶還能識別dna雙鏈分子上的特定核苷酸序列（起動基因） 。
  6. Jak2 is one of the janus kinase family. it participates in the jak - stat signal transduction and plays roles in signal transduction of many cytokins and growth factors such as growth hormone, il and gm - csf. it plays essential roles in cellular functions, i. e. cell proliferation and differentiation

    Jak2是janus激酶家族中的一員，參與jak - stat信號通路，介導諸如生長激素、白細胞介素、 gm - csf等細胞因子和生長因子的信號傳導，在細胞的增殖、分化等活動中起重要作用。
  7. Being a sort of new principle micromotor in the fronitier of science. the ultrosonic motor ( usm ) is developed at recently twenty years. utilizing the stator surface particle elliptical motion excited by piezoceeramics, the usm is drived by friction force between the stator and rotor. compared with the conventional electromagnetic motor, the ultrasonic motor has the following features : high speed, high holding torque when power is off and so on. because of it ' s characteristics, the ultrasonic motor has obtained some widespread application in robots, precise instrument, house electronical appliance, sapceecraft automobile and micromechanism

    超聲波電機（ ultrasonicmotor ）是近二十年來發展起來的一種新原理電機，其原理不同於傳統的電磁型電機，它是利用壓電陶瓷的逆壓電效應使定子的表面質點產生橢圓運動，通過定子和轉子之間的摩擦力驅動轉子運動。這種新型的電機與傳統電磁電機相比，具有響應快、不受電磁干擾、結構緊湊、低速、大扭矩、斷電自鎖等優點，因而在微型機械、機器人、精密儀器、家用電器、航天器、汽車等方面顯示出廣泛的應用前景。
  8. Stat3 ( signal transducer and activator of transcription 3 ) is important for embryo morphogenesis, cell growth, apoptosis and cell mobility

    信號轉導和轉錄激活因子3 （ stat3 ）在動物的早期胚胎發生、細胞生長、凋亡控制和細胞運動等過程中起著很重要的作用。
  9. In chapter four, according to the analysis on the boundary theory and velocity field of main fluid zone of two - phase fluid pumps, the parameter equations of vane ' s modular curve of centrifugal pump are given, which contact the boundary " layer and eular theory of two - phase fluid pump by the fixing angel of vane as variable and leading into the velocity coefficient a. the results show that, in designing process of vane ' s modular curve of centrifugal pump, the determination of the total shape and parameters relates the flow properties of two - phase fluid and output ability of pump, or the design of the modular curve of centrifugal pump is the kernel of hydraulic design

    第四章依據固液兩相流泵的邊界層理論及對主流區速度場的分析，給出了離心泵葉片型線的參數方程；它是以葉片安裝角為參變數，以引入的速度系數k _ v作為中間因子，將兩相流泵的邊界層理論和歐拉理論聯系起來? ?它說明了這樣一個事實，在離心泵葉片型線的設計過程中，它的整個形態或參數的確定都關繫到兩相流體的流動特性和泵的輸出能力，或者說，離心泵型線的設計是其水力設計的核心。
  10. The blade inner channel cooling is a complex convection - conduction coupling problem. this thesis build a three - dimension. compressible turbulence model, and give a general solve method. with the geometrical model of the glossily rectangle straight channel, the rectangle straight channel with in - line arrays disturb plates, the rectangle straight channel with staggered arrays disturb plates, the rectangle straight channel with slant disturb plates, this thesis compute the flow and heat transfer condition when the cold air path though these channels, and gain the temperature field, pressure field, velocity filed, in addition. this thesis also analyze the influence of the different channel height, the different channel materials, the different channels, and gain the function relation between he nusselt number, friction factor and reynolds number. this thesis is emphasis on the new heat transfer enhancement structure, that is, disturb plates, with the comparison with the glossily channel and channel with pin fins, the heat transfer enhancement effect of the former is better, and the conclusion can be used in the design of aircraft blade

    葉片內部通道冷卻是一個復雜的對流?導熱耦合傳熱問題，本文在分析葉片內部通道冷卻的流動與傳熱情況的基礎上，建立了三維、可壓縮紊流的物理模型，得到了通用的求解辦法；利用不帶擾流片的矩形直通道、帶順排擾流片矩形直通道、帶叉排擾流片、帶傾斜擾流片的矩形直通道的幾何模型，計算了冷卻空氣通過這幾種通道時的流動與換熱情況，得到了各種不同情況下計算區域的溫度場、壓力場、速度場；在此基礎上分析了不同的通道高度、不同的葉片通道材質對葉片內部通道冷卻的影響，並整理得到了各種通道形式下，努謝爾數和阻力因子與雷諾數的函數關系；本文重點研究了新型的葉片內部通道冷卻強化傳熱措施?帶擾流片的內部冷卻通道的強化傳熱效果，通過與光滑矩形直通道、帶針肋通道的冷卻效果的比較，表明了這種新型鮚構的優勢，對于葉片內部通道冷卻結構的設計可以起到指導的作用。
  11. As a hard - core part of epikarst ecosystem, soil makes a hinge action in the karst process. it forms a leach layer between rainfalls and carbonate and gives a great much time and space in the karst process. soil co2, a very pivotal factor in the karst dynamic factors, makes an action of driving forces in karst dynamic system

    土壤作為表層帶巖溶生態系統的核心部分，在巖溶過程中起著樞紐作用，它的存在使得大氣降水與碳酸鹽巖之間形成一個「過濾層」 ，賦予巖溶作用更廣闊的時間和空間，其中土壤co _ 2是個非常關鍵的因子，它是巖溶作用的重要物質來源，在巖溶動力系統中起著驅動力作用。
  12. It is the main purpose of this paper to calculate the energy splitting of ground state and excited states induced by thermally assisted quantum tunneling. first, a brief introduction is given for the theoretical and experimental studies on the magnetic macroscopic quantum effects. then, spin tunneling in a uniaxial ferromagnetic particle in transverse magnetic field is converted to a pseudoparticle moving in effective double - well potential with the help of the effective potential description of quantum spin systems developed by ulyanov and zaslavskii. finally using the periodic instanton method we evaluate the transition amplitude, energy shift and prefactor of wkb exponential and the energy splitting of ground state and the tunneling rate for excited states induced by thermally assisted quantum tunneling are obtained

    文章首先對磁性宏觀量子效應的理論和實驗方面作了簡單介紹，然後藉助于ulyanov和zaslavskii發展的一種等效勢描述方法，把外磁場沿難磁化軸方向時的自旋隧穿約化成在等效雙勢阱中運動的粒子，利用瞬子方法給出基態能級劈裂，最後利用周期瞬子方法分別計算了隧穿幅、能級移動以及wkb前因子，從而給出由於熱助量子隧穿引起的激發態的隧穿率。
  13. Reins and whip and coachman and guard, however, in combination, had read that article of war which forbad a purpose otherwise strongly in favour of the argument, that some brute animals are endued with reason ; and the team had capitulated and returned to their duty

    好在韁繩鞭子車夫和衛士的聯合行動有如宣讀了一份戰爭文件的道理。那文件禁止擅自行動，因為它可以大大助長野蠻動物也有思想的理論。於是這套馬便俯首投降，回頭執行起任務來。
  14. To investigate the space / time distributions and occurrence and evolution of such events, the diffusion pattern over deserts, turbulent transfer features in sandstorm weather, the particle size distribution, mass concentration and its distribution, optic properties, chemical composition and physical factors responsible for the initiation of raising sands, we made integrative observation and sounding of sandstorms deep in the large - scale desert area, including tengri, badanjilin and maowusu, with the items consisting of micrometeorological measurement, 3d wind observation, data from kb - 120 and anderson samplers of mass concentrations of sands with their spectrum, the distribution of aerodynamic particle sizes from the aps3310a, retrieval of aerosols " optic depth from sunphotometer data, assay of the chemical composition by means of neutron activiation analysis ( naa ) and integrated study of all related factors for causing sandstorm to occur, based on the observations of all kinds

    利用所取資料，系統分析了不同強度沙塵天氣條件下沙塵氣溶膠質量濃度和質量濃度譜、粒子譜分佈、光學厚度、化學組分等特徵；綜合分析了影響沙塵起動的諸物理因子在沙塵起動中的作用；用沙塵輸送模式對一次沙塵暴天氣造成的泥雨過程的形成機制進行了模擬。歷史氣象資料統計分析表明，沙塵暴有其高發期（ 4 、 5月）和高發時段（ 14 - 20時） ， 14時到20時之間發生的沙塵暴約占沙塵暴總次數的66 。揚沙和沙塵暴天氣條件下，湍流動量通量和湍流感熱通量都是重要的湍流交換，沙塵暴發生前近地層的超絕熱不穩定對沙塵暴天氣有加強作用。
  15. The habitats for moving about of great bustard are hillocks on grassland. and they prefer to move about on the valleies of grassland during their breeding season. there are 4 main vegetation characteristic factors that determine the nest - site selection, the factors are the vegetation canopy, vegetation density, food and the height of plant. the great bustard selects the areas with higher vegetation canopy, vegetation density, plant species and insect quantity. most height of plants are below 20cm, but we also found they move about in tall grass occasionally

    大鴇繁殖期活動棲息地為波狀起伏的草原漫崗地，多喜歡活動在海拔為170 300m左右，四周高、中間凹的漫崗凹地中。決定大鴇繁殖期棲息地選擇的主要植被特徵因子共有4個，分別為植被蓋度因子、植被密度因子、食物因子和植物高度因子。大鴇多選擇在植被蓋度和密度較大、植物種類和昆蟲數量較多及多數植物高度在20cm以下，但又不乏高草的地方活動。
  16. The results show that a warm high ridge at the middle level and transformed surface cold high over the plain provide a good background condition ; a cooling process produced by net surface radiation fluxes is the trigger and strengthening mechanism for the fog event ; the subsidence flow at the middle and low tropospheric levels is favorable for the setting - up and maintenance of stable stratification at the boundary layer and weak wind condition at the ground layer over the fog region ; the transportation of weak warm advection at lower levels and weak lift motion at the boundary layer play a very important role to the long maintenance of the fog event ; the intrusion of north wind accompanied by cold advection is a main dynamic factor of the fog dissipation

    結果表明：在中高層暖性高壓脊及地面變性冷高壓穩定維持的大尺度背景條件下，地表凈輻射引起的近地層冷卻是大霧過程的觸發和加強機制；中低空下沉氣流的存在有助於近地層的弱風條件和穩定層結的建立；低層暖平流的輸入和邊界層的淺層抬升是大霧長時間持續的原因；伴隨冷空氣南下的偏北大風是驅使大霧消散的動力因子。
  17. Grain crops land decreased by 27. 3 thousand hectares at a speed of 6 % annually. driving forces differ in different periods, but income per capita, proportion of non - farmers, value of tertiary line, industrial value and cropping value are major driving factors in all periods. these driving factors influence reciprocally land use change, play a vital role in structural change of land use to promote land use transfer towards suburban multifunction

    對不同階段的土地利用變化驅動力分析得出：雖然各階段的驅動力因子有所不同，但人均收入、非農人口比例、第三產業產值、工業產值和種植業產值是各個階段土地利用變化的主要影響因子，這些因子相互交叉影響土地利用轉變，對土地利用結構的改變起到重要作用，是促進土地利用向城郊型轉化的主要原因。
  18. Introduction protein kinase c ( pkc ) is a number of serine / threonine kinase family which play central regulatory roles in a multitude of cellular processes, including cell proliferation, cell cycle progression, differentiation, apoptosis. increasing evidence from studies using in vitro and in vivo systems suggests that pkc is a key regulator of critical cell cycle transitions, including cell cycle entry and exit and the gl and g2 checkpoint

    前言細胞周期是細胞增殖、分化的一個重要過程，它的啟動與進程受到嚴格調控，參與調控的因子不僅包含起正調控作用的細胞周期素（ cyclins ） 、細胞周期蛋白依賴性激酶（ cyclin - dependentkinase ， cdk ） 、還有起負調控作用的cdk抑制因子（ cyclin - dependentkinaseinhibitor ， cki ） 。
  19. The permanent magnet brushless dc motor is a dc motor using electronic commutation in place of mechanical commutation in fact, so it has excellent characteristics of dc motors, for example good start and timing performance. it simplifies the motor ' s structure and overcomes the friction disadvantages of ordinary dc motor because it does n ' t use mechanical commutation. it is extensively used in aviations, robots, digital machine tool and so on

    永磁無刷直流電動機實際上是以電子換向代替機械換向的直流電動機，因而保持了直流電動機的優良特性，具有較好的起動和調速性能，又因它無需機械換向器使電機的結構簡單，可以從根本上克服一般有刷直流電動機易於產生換向火花的弊病，在航天、機器人、數控機床等許多工業領域已得到廣泛應用。
  20. The permanent magnet brushless dc motor is a dc motor using electronic communication in place of mechanical communication in fact, so it has excellent characteristic of dc motors, for example good start and timing performance. it simplifies the motor ' s structure and overcomes the friction disadvantages of ordinary dc motor because it does n ' t use mechanical communication. it is extensively used in aviations, robots, digital machine tool and so on

    永磁無刷直流電動機實際上是以電子換向代替機械換向的直流電動機，因而保持了直流電動機的優良特性，具有較好的起動和調速性能，又因它無需機械換向器使電機的結構簡單，可以從根本上克服一般有刷直流電動機易於產生換向火花的弊病，在航天、機器人、數控機床等許多工業領域已得到廣泛應用。
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