threshold intensity 中文意思是什麼
threshold intensity
解釋
臨界強度-
We use fuzzy mathematical morphology to remove noise and dust which can lower noise successfully and also make up a loss of intensity caused by fluorescence blench. to acquire the target region, we purpose automatic gridding method based on image segmentation for image with irregular spots, it ' s segmentation through threshold. this method is presented simply and fast
在網格定位中，本文針對信號點不規則的晶元圖像提出了基於圖像分割的自動定位方法? ?閾值分割，該方法簡單快速，但對于光密度分佈不均勻的信號點，可能會去掉部分微弱信號，降低了計算的準確性。 -
Corticofugal modulation of frequency tuning of inferior collicular neurons in big brown bat, eptesicus fuse us chinese science bulletin, 2000 in order to explore the possible mechanism of corticofugal modulation of excitatory frequency tuning curves ( eftcs ) of midbrain neurons, we examine the change of sharpness, frequency - intensity response area, minimum threshold of both eftcs and inhibitory frequency tuning curves ( iftcs ) of inferior coliicular neurons during corticofugal modulation using two - tone inhibition paradigm and micro - electrical stimulation technique
第二章大棕幅聽皮層對中腦下丘聽神經元頻率調諧曲線的調制科學通報， 2000用雙聲刺激的方法和電刺激技術，進一步研究了在激活聽皮層前後下丘聽神經元興奮性和抑制性頻率調諧曲線的銳度、頻率強度反應區域、最低閾值的協同變化 -
Increasing ultrasound intensity in the range of cavitation threshold and cavitation peak value, decreasing monomer concentration and increasing the temperature make the induction period shorter. under optimized reaction conditions, the conversion of ba can reach 90 % in 11 min at high n2 flow rate the viscosity average molecular weight of the obtained pba reaches 5. 24 106. the molecular weight of pba varies with ultrasonic irradiation time, indicating that the ultrasonic induced emulsion polymerization is dynamic and quite complicated, polymerization of monomer as well as degradation of polymer occurs concomitantly
一、實現了無常規化學引發劑存在下的超聲輻照引發丙烯酸正丁酯（ ba ）間歇乳液聚合，制備了pba納米粒子，在11min內轉化率達到90 ，分子量達5 . 24 10 ~ 6 ，隨反應時間的延長而降低，表明超聲輻照引發乳液聚合是一個動態的復雜過程，單體的聚合和聚合物的降解同時發生。 -
The opposite results were observed for excitatory and inhibitory ftcs of corticofugally facilitated icc neurons. corticofugal inhibition increased sharpness, minimum threshold, and decreased the frequency - intensity response area of eftcs, at the same time it decreased the sharpness, minimum threshold but increased the frequency - intensity response area of iftcs
結果表明，聲源方位對下丘聽神經元頻率調諧曲線的銳度、最低閾值有影響，多數神經元在記錄部位同側的頻率調諧曲線的銳度比對側大，最低閾值比對側高。 -
This method utilizes the distribution property of image intensity. given the false alarm probability, the threshold for likelihood difference can be determined
該方法利用sar圖像的強度分佈特性，根據虛警率確定相鄰區域之間存在邊界的似然差函數的閾值。 -
On this basis, a model of pulse damage threshold fth ( j / cm2 ) was proposed. calculations on pulses of three different envelope shapes indicate that, with the same pulse duration, wavelength and incident light intensity, fth of pulse with gaussian envelope is higher that that of the pulses with hyperbolic secant and lorentzian envelope, i. e. gaussian pulse would need a little higher intensity to induce breakdown than the other two
在這個基礎上，提出了一個研究脈沖破壞閉值的模型，對三種不同包絡脈沖的分析表明，在相同的脈寬、波長和入射光強下，高斯脈沖的破壞閉值較高，雙曲正割和洛侖茲脈沖的破壞閩值相對較低，即高斯脈沖最不容易對介質造成破壞。 -
As the injection current is increased above the threshold value (10. 7-24), the laser oscillation intensity builds up.
當注入電流增加到由式（107-24）表示的閾值以上時，激光振蕩強度就會增長。 -
Method for determination of threshold stress intensity factors and fatigue crack growth rates in metallic materials
金屬材料的閾限應力強度因子和疲勞裂紋增長率的測定方法 -
The probability of being or exceeding a given damage state of buildings by a given ground motion intensity is calculated from the spectral displacement corresponding to the intersecting point of the demand spectrum and the capacity curve, the median value of spectral displacement at which the building reaches the threshold of the damage state and the standard deviation of natural logarithm of spectral displacement of the damage state
文中，討論了非彈性需求譜的推算，將現行抗震設計規范中規定的反應譜換算得到的彈性需求按對應的譜位移折減，得到非彈性需求譜。依對應的譜位移在四個需求譜上的四個點和原點，構造了典型建築物的抗力曲線。 -
Based on these foundations, we give a perfect scheme of the bbo opos : single pass amplification coefficient of the opg under different pump intensity is calculated ; collinear type - i and type - ii phase matching tuning curve pumped by the q switch nd : yag various harmonics as well as noncollinear type - i tuning curve are calculated in details ; the effect of the walkoff for the nonlinear effect coefficient and the group velocity matching are analyzed ; the acceptance angle in parametric process is calculated ; the numerical threshold of the bbo opo is calculated ; the process of the saturation and depletion of the pump beam are analyzed ; the relationship of the conversion efficiency and reflectance of output mirror are discussed ; various linewidth controlling methods are discussed ; the improvement of the beam quality applying the unstable cavity is discussed ; and the crystal bbo design is considered
在此基礎上，給出了一整套bbo - opo激光參數設計方案：計算了不同泵浦強度下的參量放大倍數；詳細計算了在nd : yag調q激光器各次諧波泵浦條件下的共線類和類相位匹配的調諧曲線，以及非共線類相位匹配調諧曲線；分析了走離角對非線性系數和群速匹配的影響；計算了參量過程的允許角；計算了bbo - opo的理論閾值條件；分析了飽和與泵浦光束的消耗過程；給出了轉換效率與超過泵浦閾值的倍數的關系；討論了轉換效率與輸出鏡反射率的關系；討論了線寬控制的各種方法；研究了利用非穩腔改善光束質量的方法；考慮了bbo晶體的設計。 -
Adopting the amendatory rate equation, the threshold of the micro - cavity has been studied and the conclusion is shown as following : if there is not non - radiation transition, the pump velocity just need to compensate the photon velocity escaped from the cavity, and the intensity of output light will direct ratio to the intensity of input light then we got a micro - cavity laser with no threshold
採用修正的速率方程對微腔激光器的閾值進行研究，得到如下結論：在沒有無輻射躍遷時，激光器的泵浦速率只需恰好補償光子向腔外的逃逸速率，輸出光強隨著輸入泵浦光強性線增加，實現所謂的「無閾值」激光器。 -
Standard test method for determining a threshold stress intensity factor for environment - assisted cracking of metallic materials
測定金屬材料環境致裂的界限應力強度因子的標準試驗方法 -
Studies indicated that image distance is independent of input intensity above a certain threshold and distance between modulate plane and input plane of media, but dependent on the gain coefficient and modulation size ; the intensity of the " hot image " is independent of modulation size and distance between modulate plane and input plane of media, but dependent on the intensity of input beam and the gain coefficient
研究表明，成像距離基本上與輸入光束的強度和調制平面到介質入射面的距離沒有關系，但是與介質的增益系數及調制細絲的尺寸有關； 「熱像」的強度與調制細絲的尺寸和調制平面到介質入射面的距離基本上沒有關系，但是與輸入光束的強度和增益系數有關。 -
We also experimentally observed the effect of sodium atom - molecular collisions and sodium atom - atom collisions on the line - shape and intensity of fluorescence spectra. in addition, the optically pumped infrared stimulated emission and energy transfer up - conversion process are observed in pr3 + : y2sio5, and with the threshold energy, temperature dependence and divergence angle for the stimulated radiation are measured
此外還研究了摻雜在固體y _ 2sio _ 5中的pr ~ （ 3 + ）的光泵紅外受激輻射和能量轉移上轉換，分別測得了紅外受激輻射的閾值能量和發散角，並擬合得出了能量轉移速率。 -
The gasoline flame radiation intensity and flicker frequency are both monitored to improve the system reliability. thus it is trusted “ flame on ” only under the case when the radiation intensity and flicker frequency are both above the threshold values ; otherwise it is treated as “ flame blowout ”. then the transmitter, the displayer and the software also are present
本設計中採用同時測量火焰輻射強度和燃燒時閃爍頻率的方式保證監測的可靠性，當頻率和強度均高於設定的閾值時，判定為「有火」 ;反之，判定為「無火」 。 -
With the intensity of laser increased a series of new phenomena appears, for example, multiple photon lonization ( mpi ), above threshold lonization ( ati ), tunnel lonization ( tl ), stable lonization ( si ) and so on
隨著激光強度的增加，會出現一系列的新現象，例如多光子電離，隧穿電離，閾上電離和穩定化電離等現象。 -
The study of srs in non - linear optic fiber by simulink emphatically. the initial intensities of pump beam and stokes beam are similar, and small signal gain theory needs to amend have been pointed. srs comply with the special growth law, does not have " threshold " characteristics. lt depends not only on the intensity of pump beam but also on the intensity of stokes beam itself. even if the intensity of pump beam is weak, fhe srs effect is maybe still take place. in addition, the problem about srs effect depends on the number of channels, power in each channel and space of the channels, in a dwdm system has been studied
並著重論述了如何利用simulink研究非線性光纖光學中的受激喇曼效應，指出在光纖通信的情況兩個光束的初始強度相差不多時，小增益理論需要修正。 srs遵從特殊的增長規律，並不具有「閾值」特性。 stokes束的增長不僅依賴于泵浦波的強度，而且也和自身的強度有關系。 -
The idea is that the microburst or windshear alerts passed by the air traffic controllers to the pilots should include the location i. e. runway or 1, 2 or 3 nautical miles from runway threshold of the first encounter of the microburst or windshear event i. e. first encounter and the maximum value of the computed wind speed difference i. e. maximum intensity
這準則的構思是，所有經航空交通管制員傳遞給飛機師們的微下擊暴流預警或風切變預警，均包含首次相遇微下擊暴流或風切變事件的位置即跑道或離跑道入口兩端1海里2海里或3海里的地方以及計算風速差別的最大數值即最大強度。 -
The idea is that the microburst or windshear alerts passed by the air traffic controllers to the pilots should include the location ( i. e. runway or 1, 2 or 3 nautical miles ( nm ) from runway threshold ) of the first encounter of the microburst or windshear event ( i. e. first encounter ) and the maximum value of the computed wind speed difference ( i. e. maximum intensity )
這準則的構思是，所有經航空交通管制員傳遞給飛機師們的微下擊暴流預警或風切變預警，均包含首次相遇微下擊暴流或風切變事件的位置即跑道或離跑道入口兩端1海里、 2海里或3海里的地方以及計算風速差別的最大數值即最大強度。 -
When the interaction length or gain coefficient is changed, the sbs threshold is changed, and the intensity value of optical limiting is altered
當改變相互作用長度或者介質增益系數，即可以改變受激布里淵散射的產生閾值，進而改變輸出脈沖空間限幅的幅值。
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