threshold effects 中文意思是什麼

threshold effects 解釋
閾值效應
  • threshold : n. 1. 門檻;入口,門口。2. 【心理學】閾限。3. 界限,限度。4. 【物理學】臨界值,閾。5. 入門,開始,開端。
  • effects : (游戲)效果
  1. Effects of the iontophoresis of aconitine on the pain threshold of the rat adjuvant arthritis

    電針對大鼠足底疼痛病灶所屬脊髓節段一氧化氮合酶陽性反應的影響
  2. Then, an implicit expression for electron density and a closed form of threshold voltage are presented fully comprising quantum mechanical ( qm ) effects

    給出了電子密度的隱式表達式和閾電壓的顯式表達式,它們都充分考慮了量子力學效應。
  3. Chapter 4 designs and determines the parameters of the algorithm adopted in the instrument system. analyzes and compares the different effects to frequency estimation when using digital filters with different group delay ; determines the data length, a parameter of frequency estimation ; introduces the method of available judgment of sensing signal and determines the judgment threshold as well

    第四章設計和確定了儀器系統軟體演算法的部分參數:分析和比較了不同群延遲特性的數字濾波器對頻率估計的影響;確定了影響頻率估計參數?數據長度的取值規律;給出了判斷傳感信號有效性的檢測方法並確定了檢測門限的取值規律。
  4. This article summarizes the investigation on infrasound at home and abroad and introduces such issues about infrasound as the effects of infrasound on cardio - vascular system, nervous system, audition and vision, its application to medical device as well as its safe - threshold

    摘要次聲是不可聽聲,綜合國內外的研究,介紹了次聲對動物心血管系統、神經系統、聽覺、視覺等的影響,及其在醫療器械中的應用,分析了次聲的閾值問題。
  5. In this essay the effects of 3 lexical problems on l2 reading comprehension are stated. means of pedagogy and vocabulary acquisition strategy education are adopted to fulfill the vocabulary threshold

    摘要本文概述了詞匯量在第二語言習得中影響閱讀理解的三個詞匯學問題,並闡明了為實現詞匯量閾值應採取的詞匯教學方法和詞匯習得策略。
  6. The effects of air ' s absorption of heat, scatter, turbulent and thermal blooming on the laser beam transmitting under the air breakdown threshold value are analysed when laser transmit in the air and the result can be used designing of the laser system

    摘要系統分析了激光在大氣中傳輸時在擊穿閾值以內,由於大氣汽溶膠的吸收、散射、大氣湍流、大氣熱暈等線性非線性問題對光束控制系統的影響,為激光系統提供指導。
  7. A model of the interface state density distribution near by valence band is presented, and the dependence of the threshold voltage on temperature, the c - v characteristics and the subthreshold characteristics are predicted exactly with this model ; the effects of s / d series resistance on the output characteristics, transfer characteristics and effective mobility of sic pmosfets are analyzed. thirdly, the output characteristics and the drain breakdown characteristics are modeled with the procedure medici. the output characteristics in the room temperature and 300 ? are simulated, and the effects of gate voltage. contact resistance, interface state and other factors on sic pmos drain breakdown characteristics are analyzed

    提出了一個價帶附近的界面態分佈模型,用該模型較好地描述了sicpmos器件閾值電壓隨溫度的變化關系、 c - v特性曲線以及亞閾特性曲線;分析了源漏寄生電阻對sicpmos器件輸出特性、轉移特性以及有效遷移率的影響;論文中用模擬軟體medici模擬了sicpmos器件的輸出特性和漏擊穿特性,分別模擬了室溫下和300時sicpmos器件的輸出特性,分析了柵電壓、接觸電阻、界面態以及其他因素對sicpmos擊穿特性的影響。
  8. The result of experimentation on coupling effect of water and fertilizers on spring corn in the three gorges reservoir area indicate that water stresslead the effect low of highness and lai, and the most effect is made in shooting stage ; it has a significant positive correlation between the yield of corn and biomass, and hasn ' t none significant positive correlation between the yield of corn and the weight of roots ; the coupling effect of water and n is significant, but the coupling effect of water and k is not significant, the maximum yield of corn condition fitting - water and medium n, corn absorbs n has a threshold value during the growth, and using superfluous n is able to prick up soil drought and crop drought ; water is the leading factor which effects the yield of corn, next is n and k

    摘要三峽庫區春玉米盆栽水肥耦合試驗研究結果表明,水分脅迫導致玉米株高和葉面積指數降低,以拔節期受到影響最大;玉米產量與生物量呈顯著正相關關系,產量與根重無顯著正相關關系;水氮耦合效應顯著,適宜水分和中氮處理下玉米的產量最高,玉米生長發育對氮肥的吸收存在一定的閾值,過多施用氮肥會加劇土壤乾旱和作物乾旱,水和鉀耦合效應對玉米產量影響不顯著;水分是影響玉米產量的主導因素,其次是氮效應和鉀效應。
  9. Among those nonlinear effects, stimulated brillouin scattering has the worst effects on the fiber hydrophone system due to its low threshold and it produces a new light wave which is different from the incident light in frequency. this dissertation discusses the physical mechanism and quantum explanation of sbs in fiber

    在眾多非線性效應中,由於受激布里淵散射( stimulatedbrillouinscattering )效應的閾值最低,且產生了與入射光場不同頻率的新的光場,故對光纖水聽器系統而言,影響最大的即是受激布里淵散射效應。
  10. Secondly, the radiation effects of the system of silicon gate si / sio2 ( silicon gate nmos and pmos ) implanted bf2 are made a deep systematic study. especially, the relationship between threshold voltage shift ( vth and vit vot ) in radiated mos transistor and irradiation dose rate, irradiation dose, irradiation temperature, bias voltage, device structure as well as annealing condition is explored emphatically

    在此基礎上,對bf _ 2 ~ +注入硅柵si sio _ 2系統低劑量率輻照效應進行了深入系統的研究,著重研究了bf _ 2 ~ -注入mos管閾值電壓漂移( vth和vit 、 vot )與輻照劑量率、輻照總劑量、輻照溫度、偏置電場、器件結構以及退火條件的依賴關系。
  11. In the field of the phytoremediation of copper pollution, submerged macrophytes are focused less than the terrestrial plants. in this study, ceratophyllum demersum l. and cahomba caroliniana a. gray were used as the test plant. the following two aspects were investigated in vivo methods : 1 ) the toxicity effects of cu2 + on the three main antioxidant enzymes ( including cat, pod and sod ) of two submerged macrophytes were detected at different low doses and on the chronic exposure, in order to establish the dose - effect relationship and the time - effect relationship, and thereby acquire the toxicity threshold ; and 2 ) with two submerge macrophytes throng cultured individual or combined on the chronic exposure, it was found on the bcf of copper and the influence of interspecific relationships to the submerge macrophytes resistance or bioconcentration

    本論文以兩種大型沉水植物金魚藻( c . demersuml . )和水盾草( c . carolinianaa . )為受試植物,從它們對水體中cu ~ ( 2 + )的生物富集作用和動態,以及cu ~ ( 2 + )對它們體內抗氧化酶的急性毒性效應和亞急性毒性效應兩方面進行了研究: 1 )通過體內暴露不同劑量的cu ~ ( 2 + ) ,探討cu ~ ( 2 + )對植物體內三種主要的抗氧化物酶( sod , pod , cat )的毒理效應,建立劑量?效應關系和時間?效應關系,以揭示沉水植物對cu ~ ( 2 + )的抗性機制; 2 )通過對金魚藻,水盾草單獨培養和共同培養的方式,分別研究了兩種沉水植物對cu ~ ( 2 + )的生物富集系數及其動態以及兩種植物的種間關系對富集銅和植物耐性的影響,綜合評價了兩種植物在銅污染水體的植物修復中的應用前景。
  12. It includes spatial and visual effects of waterfront development, threshold limit of reclamation, view paths of special scene spots, ridgeline protection, tall structures at strategic locations

    這個形式應包括海旁發展的空間及視覺效果、填海區的界限、特殊風景點的觀景徑、山脊線的保護,以及位於策略性位置的高聳建築物。
  13. Optical gains as large as one million are used to achieve the high sensitivities required in current electro - optical sensors. these large optical gains make the detector the most susceptible sensor element to laser damage. people concerns that the influence to the quality of ccd camera image under laser irradiation, the laser - induced threshold of ccd detector and the evaluation of laser - induced effects

    光電探測器具有極強的目標探測能力,而激光具有極高的亮度;因而各類光電裝備的光電探測器成為國外發達國家正在大力發展激光武器系統的首要攻擊目標,激光對探測器的干擾與損傷程度如何、受干擾后能否繼續正常工作、何時達到損傷閾值以及如何對干擾效果做出客觀評價是人們非常關心的問題。
  14. Nothing in our experience has ever raised the strange effects of relativity to the threshold of observability.

    在我們的日常生活中,從來還沒有什麼東西使奇特的相對論效應提高到可觀察的程度。
  15. The results showed that the concentration, size and shape of si particles in altilola, ast101a and zl101 had some effects on the fatigue threshold, and the irregular shaped brittle phase of fe intermetallics caused the fatigue threshold decreased

    結果表明, ast101a 、 aiti101a和zl101中51粒子的濃度、大小和形貌對材料疲勞門檻值的高低有一定的作用,脆性的富fe相是疲勞門檻值降低的另一個重要原因。
  16. The severity of stochastic effects is independent of the absorbed dose. under certain exposure conditions, the effects may or may not occur. there is no threshold and the probability of having the effects is proportional to the dose absorbed

    隨機性效應隨機性效應的嚴重程度是不受吸收劑量的大小影響。在一定的照射條件下,效應可能出現,也可能不出現,而發生的機率則與劑量大小有關,並且不存在劑量閾值。
  17. Based on the rate - equation theory of four - level system, the expressions of threshold pump power, output power and slope efficiency are given. the influence of space distribution of pump light ( the position of focusing point, dimension of pumping light and divergence angle ) to the output characteristics are also discussed. then, by investigating the effects of thermal effect of laser crystal on the size of laser cavity mode, we obtain the mode - matching principle of high power laser diode end - pumped solid - state lasers

    其中,在泵浦光的空間分佈變量中我們分別考慮了泵浦光聚焦后的腰斑大小、聚焦腰斑在增益介質中的位置以及泵浦光在介質中發散角的影響;然後我們研究了在高泵浦功率下激光晶體因吸收泵浦光而產生的熱效應所導致的熱透鏡效應以及熱致衍射損耗,通過分析它們對振蕩激光腔模尺寸的影響,得到了高功率半導體激光二極體端面泵浦固體激光器模式匹配的要求,為高功率連續單頻nd : yvo _ 4激光器的優化設計提供了理論依據。
  18. Mosfet ; radiation effects ; threshold voltage shift ; radiation sensitivity

    Mosfet閾值電壓漂移輻照效應輻照敏感性
  19. At the case of excess of nonlinear effects appearance threshold, not only are quality reduction of the wave front passing optical elements and energy losses possible, but also the fatal destruction of optical elements in themselves are the most grievous

    當泵浦光強度超過產生非線性效應的閾值時,激光通過諧波轉換晶體后,不但光束波前質量將有可能變差,而且還會損失一部分能量,更嚴重的是光學元件的致命破壞。
  20. Under certain exposure conditions, the effects may or may not occur. there is no threshold and the probability of having the effects is proportional to the dose absorbed

    在一定的照射條件下,效應可能出現,也可能不出現,而發生的機率則與劑量大小有關,並且不存在劑量閾值。
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