低閾 的英文怎麼說

中文拼音 [dīyù]
低閾 英文
low threshold
  • 閾 : 名詞1. [書面語] （門坎兒） threshold; doorsill2. （界限; 范圍） threshold
  1. 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。
  2. The high - power semiconductor quantum well ( qw ) laser is a kind of luminescence device with superior performance, it has longe - lived, low threshold current density, high efficiency, high luminosity and excellent monochromatic, coherence, directionality, etc. the high - power semiconductor laser is widely applied to the fields, such as military, industrial machining, communication, information processing, medical treatment, etc. the material ' s epitaxy is the foundation of the whole laser ' s fabricating, and it has important influence on the optics and electricity performance about the laser

    大功率半導體量子阱激光器是一種性能優越的發光器件，具有壽命長、閾值電流密度低、效率高、亮度高以及良好的單色性、相干性、方向性等特點，廣泛應用於軍事、工業加工、通信及信息處理、醫療保健等領域。材料的外延生長是整個激光器器件製作的基礎，對器件的光學和電學性能有著重要的影響，生長不出優質的材料體系，獲得高性能的器件就無從談起，因此，材料的外延生長便成為了整個半導體激光器製作過程之中的重中之重。
  3. The gain is now well above the (lowered) oscillation threshold.

    此時，增益大大超過（降低了的）振蕩閾值。
  4. Free disk space dropping below a preset threshold

    可用磁盤空間是否低於預設的閾值
  5. The deterministic exclusion algorithms are designed to have 100 % guaranteed sensitivity to similarities above a user - specified threshold, but they do not scale well to large all - pairs problems at low but practically interesting identity thresholds of 65 - 70 %

    對于高於用戶指定閾值的相似性，確定的排除演算法確保具有100敏感性。但是，對于相似度低，但實際上有趣的相同度水平65 ? 70的大規模全體成對問題，其敏感性不好。
  6. The previous studies suggested that the auditory threshold of fmmu albino guinea pigs was lower significantly than that of pigment ones, the anoxia tolerance of fmmu albino guinea pigs was better than that of pigment ones, their immunological function was weaker than that of pigment ones

    目的： fmmu白化豚鼠是從普通花色豚鼠突變種中選育而成的新品系封閉群實驗動物。前人研究結果表明fmmu白化豚鼠的聽覺閾值明顯低於花色豚鼠，缺氧耐受性優于花色豚鼠，免疫功能低於花色豚鼠。
  7. This study showed that the mt and sharpness of frequency tuning curves increased as the sound direction changed from contralateral to ipsilateral azimuthal angles. it suggests that sound direction effect on frequency tuning may be through the complex interplay between the excitatory and inhibitory inputs. the application of gaba ( a ) antagonist, bicuculline, lowered all mts but the application did not abolish direction - dependent variation in mt

    聽皮層的抑制性影響使大多數神經元在蝙蝠最敏感的聲源方位c - 40的頻率分辨能力明顯提高，同時使c - 40和i - 40的最低閾值的差別進一步增大，提高了信噪比，提高下丘聽神經元對聲源方位和最佳頻率的分辨能力。
  8. 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
  9. The ingaas / gaas strained quantum well lasers are able to work with extremely low threshold current density, high characteristic temperature and high cod limit, which make ld lasers achieve higher output power and longer ufe. therefore, ingaas / gaas strained quartum wellstructures can be used for the fabrication of high power semiconductor lasers

    Ingaas / gaas應變量子阱激光器具有級低的閾值電流密度、較高的特性溫度和較高的光學災變損傷閾值，這使得激光器具有更高的輸出功率和更長的壽命。因此ingaas / gaas應變量子阱結構可以用於大功率半導體激光器的制備。
  10. If the incident proton collides with a proton bound in a nucleus, the threshold energy is lower because the target proton is bound.

    如果入射質子是與束縛在原子核內的質子相碰撞，那麼閾能會低一些，因為作為靶的質子是束縛著的。
  11. 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。
  12. Vertical - cavity surface - emitting lasers ( vcsel ' s ) have distinct advantages over conventional edge emitting lasers, such as small divergence angle, single longitudinal mode operation and very low threshold current. they are especially suitable for making two - dimensional ( 2 - d ) arrays as well as vcsel ' s based integrate devices

    垂直腔面發射半導體激光器（ vcsel ）與傳統的邊發射半導體激光器相比，它具有發散角小、單縱模工作、非常低的閾值電流等優點，尤其它適於二維面陣集成和與其它光電子器件集成。
  13. The principles of erasure codes used under binary erasure channels are summarized and erasure codes which belong to standard classes of rs codes are introduced with emphasis on cascaded low - density erasure codes with linear time encoding and erasure recover algorithms. thresholds of regular degree distributions are analyzed. it is shown that low - density erasure codes based on ( d, 2d ) - regular sequences of degree distribution are not close to optimal ( d 3 ). two pares of irregular degree distribution sequences are introduced and a pare of improved right regular sequences of low - density erasure codes are presented, it is testified that the new sequences are asymptotically quasi - optimal. in the meantime, simulations of cascaded low - density erasure codes based on a few types of special sequences of degree distribution available are given, together with performance analyses on these codes

    闡述了應用於刪除通道下的糾刪碼基本原理，介紹了兩類標準的rs碼類糾刪碼，重點分析了具有線性時間編碼和恢復演算法的漸近好碼?級聯型低密度糾刪碼，分析了正則度分佈的閾值，對正則低密度校驗碼在刪除通道下的糾錯性能進行了模擬，從理論上證明了基於（ d ， 2d ） -正則度序列的低密度糾刪碼都不是漸近最優碼（ d 3 ） ，同時還分析了非正則低密度校驗碼的度序列設計，基於右邊正則序列提出了一種改進型右邊正則序列，證明了此序列為漸近擬最優的，對基於幾類現有典型度分佈序列的級聯型低密度糾刪碼進行了模擬模擬及性能分析； 3
  14. The lowest threshold current 1. 8ma is achieved with continuous - wave at room temperature, the maximum output power is 7. 96mw. for the resesrch work on the fabrication procedures, we discusses selective oxidation and selective wet etching

    利用濕法氧化和選擇性腐蝕相結合工藝研製出室溫連續工作的vcsel ，最低閾值電流為1 . 8ma ，輸出功率為7 . 96mw 。
  15. Based on these analyses, we see that the si - based quantum - dot laser has higher gain and differential gain, its threshold current is more lower and the threshold current is insensitive to temperature when si - based quantum - dot laser compares with normal semiconductor laser and quantum - well laser

    分析表明，與普通激光器和量子阱激光器相比， si基量子點激光器有更高的增益和微分增益，閾值電流更低，閾值電流對溫度更不敏感。
  16. The results show that if n - dbr is neglected, the theoretical calculations are in good agreement with the references. but our results also indicate that n - dbr has very important influences on the properties of vcsels and if it is not considered, there must be some errors. and double oxide - confining regions offer a method of decreasing threshold current and controlling high order modes

    結果表明，當不考慮n - dbr的影響時，我們的理論計算結果與文獻報道相符；但通過計算可知n - dbr對vcsel特性有較大影響，如果不考慮會帶來誤差；同時雙氧化限制層為vcsel器件提供了一種降低閾值，抑制高階橫模的方法。
  17. There are many approaches to achieve the purpose, and one of the perfect them is tunnel - cascaded multi - active regions large cavity ld structure, in which not only the effective thickness of the active region increase but also obtain lds ’ low threshold current and high slope efficiency and other properties

    有多種途徑實現ld光束特性的改善，其中採用多有源區隧道結級聯大光腔結構的半導體激光器是既增加有源區等效厚度而又保證ld低閾值電流和高斜率效率等特性的最佳途徑之一。
  18. There are many optical depletion mechanisms, such as diffraction depletion, the transimission of a reflector, scattering of the medium in the cavity, non - life absorption and so on, so the quality factor ( q factor ) is low. in

    利用這種微諧振腔製作的激光器，其自發輻射頻率落在光子晶體的禁帶范圍內，有效降低了激光振蕩的閾值，從而使激光器具有低閾值高效的特點。
  19. Theyb : gso laser obtained a lowhreshold of 77mw which is the lowest threshold in the world as far as we know

    Yb : gso獲得了77mw的低閾值，據我們所知，這是目前世界上yb : gso激光器中閾值最低的紀錄。
  20. Based on the above, we have made a research on the fabrication technology of two - dimensionally ( 2d ) arrayed surface - emiting lasers, and have obtained two - dimensionally arrayed laser primarily with lower threshold current density and higher power output, which will promote the achievement of higher reliability, lower threshold current arrayed surface - emiting lasers laser for high power output

    在此基礎上進行了面發射半導體激光器二維（ 2d ）列陣的制備研究，初步獲得了具有較低閾值電流密度和較高功率的45偏轉鏡面發射陣列半導體激光器，為研製高可靠性、高功率、低閾值電流的面發射陣列半導體激光器奠定了一定的基礎。
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