first fraction 中文意思是什麼

first fraction 解釋
初餾份
  • first : adj 1 最初的，最早的。2 最上等的，第一流的。3 基本的，概要的。4 高音（調）的。n 1 最初，第一；第...
  • fraction : n. 1. 小部分，碎片，片斷。2. 一些，一點兒。3. 【化學】分餾，分層，分級。4. 【宗教】聖餐麵包分切式。5. 【數學】分數。
  1. In the first trial, combination of enzymatic digestion was used to prepare suspensions of spermatogenic cells from adult mouse testis, and then a modified discontinuous percoll gradient centrifugation method ( 15 %, 22 %, 30 %, 40 %, 50 %, 60 % ) was introduced to isolate spermatids from the cellular suspensions. the content of spermatids in each isolated fraction by percoll method was determined by morphology ( wright - giemsa stain ) and flow cytometry analysis, and the viability of spermatogenic cells was assessed by using eosin y exclusion test

    在第一部分試驗中，首先利用連續3次組合酶消化成年小鼠睪丸制備睪丸細胞懸液，然後經6層非連續percoll梯度離心法（ 15 、 22 、 30 、 40 、 50和60 ）分離，通過形態學和流式細胞術鑒定南京醫科大學碩士學位論文各個percoll組分中精子細胞的含量，並以伊紅y排斥試驗測定細胞的存活率。
  2. Each pair represents a fraction ; the first integer is the numerator and the second integer is the denominator

    每一對都表示一個分數；第一個整數是分子，第二個整數是分母。
  3. Each pair represents a fraction, the first integer being the numerator and the second integer being the denominator

    每一對都表示一個分數，第一個整數是分子，第二個整數是分母。
  4. The pair of integers represents a fraction, the first integer being the numerator, and the second integer being the denominator

    類的新實例。此整數對表示一個分數，第一個整數為分子，第二個整數為分母。
  5. It is the optimal time for subjecting creatine to the medium when cultured to 12h and the concentration of creatine was 0. 75 %. creatine, sarcosine and choline chloride could induce the creatinase production and creatine was the optimal inducer, but creatinine and urea could not induce the creatinase production. 3 purification of creatinase the process of creatinase purification was performed as follows : first the enzyme was completely precipitated in the range of 40 - 80 % of saturation with ammonia sulfate fraction precipitation

    最佳氮源為玉米漿和蛋白腖，最佳比例為2 ： 3 ，最佳濃度為1 . 6 ；加入其它碳源時有助於菌株穩定產酶； 100ml搖瓶的最佳裝液量為15ml ；肌酸、肌氨酸和氯化膽堿都能誘導菌株產酶，其中肌酸誘導產酶的效果最好，而肌酐和尿素不能誘導菌株產酶；誘導物肌酸的最適加入時間為接種培養12小時后，最適加入量為0 . 75 。
  6. The first part is a statistical study about the probability of wave breaking and the fraction of sea surface covered by breaking water ( ie. whitecap coverage ), while the second part is a dynamical study about the influence of nonuniform current fields on the breaking of short wind waves

    本文內容包括兩個部分，第一部分是風浪破碎率和白浪覆蓋率等破碎統計特徵量的統計學研究，第二部分是非均勻流場對短波破碎影響的動力學研究。
  7. The first value in the array specifies where the first component a line begins as a fraction of the distance across the width of the pen

    數組中的第一個值指定第一個組件（直線）的起始位置，相當于鋼筆寬的一小部分。
  8. We use the stressed fraction that is the most representational and sensitive to corroding to making experiment in combined type equivalent environment spectrum. we can calculate the velocity of corroding, protection period and basal body corroding expansion lifespan, first repair time and the interval of repair period

    本文以模擬試驗結果和使用中腐蝕損傷數據統計處理為主要依據，並同時滿足安全性和經濟性兩方面的要求，在確定機體使用壽命時，以疲勞定壽結果為主、日歷定壽為輔，綜合給出飛機機體使用壽命。
  9. At first, bubble flow image is acquired using laser and incandescence lamp respectively as light source and using ccd. according to different optics - dispersion character, threshold segmentation method is proposed to identify gas from the gas - water flow, which make steadfast base for further calculate void fraction. the precision of threshold directly affect the calculate precision of void fraction

    文中分別採用激光片光源和影視燈照明，採用逐行掃描數字ccd攝像機獲取氣泡的流動圖像；根據氣泡和水對光的反射特性不同，提出採用閾值法識別圖像中的氣泡和水，從而為進一步計算摻氣濃度打下堅實的基礎。
  10. With the review of digital image properties and continued fractions theory, this dissertation focuses on the study of the image interpolation and image reconstruction ; the main contributions are as fallows : first of all, the methods of solving the problem of inverse difference being infinite are successfully found while constructing the thiele - type continued fractions. in this case it is proposed to reorder the set of interpolating points and then construct a thiele - newton blending continued fraction

    本文的主要工作可歸納如下：首先，在以圖像像素為插值節點集，構造連分式插值函數過程中出現逆差商為無窮大的情況，給出了合理的解決辦法，提出了重新調整插值節點集的節點順序、構造thiele - newton型混合有理的插值方法。
  11. The present studies aimed to find the responses of neurons and glias in the target and other brain areas of the linear accelerator - irradiated rats. in the first experiment, time - dependent neurons changes in the brain after hemispheric irradiation at an single - fraction maximal dose of 20 gy were observed by investigating the expression of an immediate early gene, fos protein. the results shown : compared with that of the un - radiated rats, the expression of fos protein in the irradiated brain decreased distinctly 24 hours and 1 week after irradiation

    首先，利用即刻早期基因fos的表達，做了同一照射劑量（ 20gy ）照射大鼠半腦后不同存活期間（ 1d ， 7d ， 14d ， 2ld ， 28d ）大鼠全腦神經元動態變化的觀察，發現：受照射后1d 、 7d大鼠腦內各部位fos蛋白表達均明顯減少，隨著時間的延長，其fos免疫反應性細胞數量逐漸增加，照射后28d ，延髓、第四軍醫大學碩士學位論文腦橋內hs免疫陽性細胞數量恢復並超過正常對照組水平，但中腦、間腦及端腦內未恢復到正常對照組水平。
  12. However, given that the remaining regulated time deposits only constitute a small fraction of total hong kong dollar deposits, the banks generally believe that the impact of the first step of deregulation, which will be implemented on 3 july 2000, will be minimal

    然而，由於餘下受管制定期存款只佔港元存款總額的小部分，所以銀行普遍認為在2000年7月3日實施的第一部分撤銷管制措施不會造成太大影響。
  13. The precipitation sequence in instable region is as follows : supersaturated solid solution congruent ordering spinodal decomposition stoicheometric phase it is found for the first time that with the increase of compositions, congruent ordering is enhanced, incubation period is shortened, spinodal decomposition is decreased, and volume fraction of ordered phase is increased

    失穩區合金沉澱序列為：過飽和固溶體（ ? ）非化學計量比有序相（ ? ）化學計量比相等成分有序化也需要孕育期，首次發現隨初始濃度的增加，孕育期縮短，等成分有序化速度加快，而失穩分解的速度相對減慢，有序相體積分數增加。
  14. This paper ， from related document exposition ， i get the hint of staging investment about capital structure contract and establishes a more simple model ， in each stage of venture enterprise ' s quit ， have designed the optimal equity proportion contract between venture capitalist and entrepreneur ， through raising the effort level of entrepreneur reduce informational asymmetries ， and reach conclusion : in first stage ， the equity proportion of venture capitalist optimal fraction is 0. 5 ， in the following stage ， the equity proportion of venture capitalist tends to increase

    本文從相關的文獻論述中得到關于資本結構契約設計和分階段投資的啟示，建立了一個比較簡單，易操作的模型，在風險企業退出前的各階段，設計了風險資本家和企業家之間的最優的股權比例契約，通過提高企業家的努力程度來降低信息不對稱下的道德風險，並得出結論：在投資第一階段，風險資本家的股權比例最優解是1 / 2 ，以後的各階段，風險資本家的股權比例趨于增加。
  15. We have sifted 103 medicinal plants, roughly identified 17 plants might contain antifungal proteins. antifungal protein was purified from cassia sophera linn, by extraction, fraction with ( nh _ ( 4 ) ) _ ( 2 ) so _ ( 4 ), cation - exchange chromatography of cm - sepharose ff xk 26, the first cation - exchange chromatography of mono s and the second one, followed by gel filtration of superose 12hr

    對茳芒決明進行了抗菌蛋白的分離純化：經粉碎、磷酸緩沖液浸提、硫酸銨沉澱、 cm - sepharoseffxk26陽離子交換層析、兩次monos陽離子交換層析、 superose12hr分子篩層析可得到具抗真菌活性的蛋白。
  16. The study includes : first, introduce the basic theories, the study status and the developing direction of the methods of measuring vegetation fraction

    研究內容主要由以下幾部分組成：首先介紹植被覆蓋度遙感測量方法的基本理論、研究現狀和發展趨勢。
  17. Secondly, for the first time, by volume average concept and reynolds time - average method, a 3d quasi - single phase mass transfer model of distillation tray is deduced by considering the effects of velocity fluctuation, concentration fluctuation and volume fraction of gas and liquid on mass transfer. a source item sc for interphase mass transfer is considered. by applying conventional method of estimating the interphase mass transfer coefficient, a formula for sc is obtained

    其次，採用體平均概念、雷諾時均化方法結合塔板氣液相互作用的實際情況首次推導了考慮速度、濃度脈動項和氣、液相含率影響的塔板三維擬單相流湍流傳質模型，源相中考慮了氣液相間傳質項sc ，並運用化工中關于相間傳質系數計算的理論，推導了sc的表達式。
  18. In this paper, we first comment on the classical approach, then present an effective modern approach based on process capability indices for measuring manufacturing process quality, specifically for high technology product requiring very low fraction of nonconformities ( often measured in ppm, parts per million )

    有鑒於此，本研究提出一個評估高科技產品製程質量水?的有效方法，也就是利用製程能力指針來評估製程能力與產出績效。
  19. The first fraction is the smallest rational number in the range, and the second fraction is the largest rational number in the range

    第一個分數是該區域中最小的有理數，第二個分數是該區域中最大的有理數。
  20. This algorithm adopts a middle ground between centroid - base and all - points - based approaches. instead of using a single centroid or all points to represent a cluster, a fixed number of representative points in space are chosen, these points represent and capture the geometry and shape of the cluster. in addition. the representative points of a cluster are generated by first selecting well - scattered objects for the cluster and then " shrinking " or moving them toward the cluster center by a specified fraction, or shrinking factor. the shrinking helps dampen the effects of outliers. therefore, cure is more robust to outliers

    該演算法選擇基於質心利基於代表對象方法之間的中間策略，它不用單個質心或簇中全部對象米代表一個簇，而是選擇數據空間中定數目的只有代表性的點，這些點代表和捕捉到了簇的形狀。此外，由於引入了收縮因子使代表點向簇小心「收縮」而使該演算法能夠較好地消除孤立點的影響，在處理孤立點上也更加健壯。
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