方差恆定性 的英文怎麼說

中文拼音 [fāngchāhéngdìngxìng]
方差恆定性 英文
constancy of variance
  • 方 : Ⅰ名詞1 （方形; 方體） square 2 [數學] （乘方） involution; power 3 （方向） direction 4 （方面） ...
  • 差 : 差Ⅰ名詞1 （不相同; 不相合） difference; dissimilarity 2 （差錯） mistake 3 [數學] （差數） differ...
  • 恆 : Ⅰ形容詞1 （永久; 持久） permanent; lasting 2 （平常; 經常） usual; common; constant Ⅱ名詞1 （恆心...
  • 定 : Ⅰ形容詞1 （平靜; 穩定） calm; stable 2 （已經確定的; 不改變的） fixed; settled; established Ⅱ動詞...
  • 性 : Ⅰ名詞1 （性格） nature; character; disposition 2 （性能; 性質） property; quality 3 （性別） sex ...
  • 方差 : dispersion
  1. At the surface of the pollen grains there are three types of aperturates, including three porates type, three colpates type and three porate - colpates type ; and four types of sculpture, namely, reticulate, striate, striate - reticulate and verrucate. the upper epidermal cells of the leaves of 12 species plants are detected with hpias - 1000 image analytic system through the treatment of binarization, and the experimental methods are proved stable. the results indicated that the waviness of the anticlinal walls ( sfc ) and the ratio of the feret ' s diameter ( slf ) of the epidermal cells of the middle lamina in the third node of leaves starting from the lowerest part of the stem have a relative constant range and could distinguish from each other. oieanolic acid, l, 5, 8 - trihydroxy - 3 - methoxyxanthone and swertiamarin are separately detected on the tlc, and the different chromatogram of various plants can be considered as characters of identification. the contents of oleanolic acid in 12 species of plants are determinated by hplc, but among the different plants and botanical organs their contents are different, and the highest content in flowers

    本文對川鄂產獐牙菜屬藥用植物資源進行了野外調查、標本採集和鑒定，對12種乾燥藥材的性狀進行了描述，提供了可以鑒別的特徵。通過掃描電子顯微鏡觀察的12種本屬藥用植物的花粉粒均為單粒花粉，萌發孔有3孔型， 3溝型和3孔溝型三種類型；表面紋飾包括網狀紋，條狀?網狀紋，條狀紋和瘤狀紋四種類型。用hpias ? 1000高清晰度彩色病理圖文分析系統對葉片上表皮細胞作圖像分析，並進行方法學研究，結果表明，同種植物莖上第3節葉片中段主脈和第1側脈之間葉上表皮細胞垂周壁彎曲程度sfc值和細胞縱、橫向直徑的比值slf值，種間有顯著差異，每種都有相對恆定范圍值。
  2. They include : ( i ) problems existing in development strategy of army listed companies, such as, replacing strategic plan with management plan ; lack of understanding for the importance of strategic management ; no development strategy at all in some companies. without strategic plan, a company can only have a partial understanding of the situation instead of a comprehensive one, just like the blinds feel the elephant ; ( ii ) the thesis intends to analyze the inside and outside factors of army listed companies to specify their development goal while taking suntime international as an example to have further analysis ; ( iii ) combining with strategic planning theory, the thesis tries to probe into the development strategies of the eight army listed companies. army listed companies can be divided into two categories : one category includes the four companies with suntime and new zhongji as their heads

    本文主要論述兵團上市公司在發展戰略方面的有關問題，包括： （一）兵團上市公司在發展戰略上存在的問題，如：以經營規劃代替戰略規劃，對戰略管理重要性認識不足，有的上市公司甚至沒有發展戰略等等，缺少戰略的規劃就如同六個瞎子摸象一樣，只識局部不掌握全局，而這正是兵團上市公司在戰略研究方面存在的問題； （二）本文試圖通過分析兵團上市公司存在的內部因素，外部因素，確定兵團上市公司的發展目標，並以新天國際為例作了進一步分析； （三）本文結合戰略規劃的理論，試圖對兵團八家上市公司發展戰略進行探索，兵團的上市公司分為兩類：一是以新天國際，新中基為首的四家企業，在本行業中經營成熟，具備實現多元化的市場戰略的能力，並可以根據市場，產品的情況採取幾種戰略方式；二是其它企業，在本行業中還存在著發展潛力，應集中力量在本行業中作強，應施行差異化戰略，名牌戰略，將自己的產品作強，進而在整個行業中作強，這些企業暫時不要去搞多元化戰略； （四）兵團企業能否做大還取決于能否持之以恆的戰略。
  3. It has a long history using a throttle device to measure the flow volume of fluid in pipe the method has formed normalization at home and abroad the principle is to make the flow bunch form the particial shrink at the place where the throttle part is located so as to produce a static pressure difference then measure and calculate the flow volume at the moment when the fluid is flowing through the throttle device by the static pressure measured this method is based on the law of conservation of energy and the equation of flow continuity

    用節流裝置測量管道中流體流量已歷史悠久，在國內、國際上都已標準化，其原理是使流束在節流件處形成局部收縮，產生靜壓力差，通過測量靜壓力差來衡量流體流過節流裝置時的流量大小，這種測量方法是以能量守恆定律和流動連續性方程為基礎的。
  4. This method is easy to implement and has no restriction on array geometry and sensor patterns ; three methods for the design of broadband frequency invariant beamformer are proposed, which are the method of resampling signals received by the array, the dft ( discrete fourier transform ) interpolation method and adaptive synthesis method, respectively. examples and performance analyses are given for each method ; a simplified linear constrained minimum variance broadband adaptive algorithm that based on dft interpolation method is presented. compared with conventional broadband adaptive algorithms, the presented method can reduce computation work greatly

    提出了一種簡單、易於實現的恆定束寬波束形成器設計方法，該方法對陣形和陣元指向性沒有任何限制；分別提出了基於陣列接收數據重采樣、基於dft插值和自適應綜合的三種具有頻率不變波束圖的寬帶波束形成器設計方法，對于每一種設計方法都給出了一個設計實例並做了性能分析；提出一種基於dft插值的簡化線性約束最小方差寬帶自適應陣列演算法，該方法可以大大降低自適應陣列的運算量。
  5. We select crm without coal as reference ; select semi - dynamic atmosphere to operate machine ; use the method fixing the temperature of hearth and that of sample holders when the analysis begins, which ensures the consistency of heating samples ; adopt the dta curve of " at - t " to analyzing crm heat, which decreases possible influences from the fluctuation of heating velocity ; draw conclusions that crm proportion and granularity influence the analysis little, but not crm moisture and coal species ; advise that there be a warm - up to the crm with much moisture before analysis and a modification to the crm with variable species of coal ; then obtain the feasible operation conditions and operation curve ( together with the curve function )

    選用白生料作標樣；選用準動態測定氣氛；採用恆定爐膛溫度（ 650 ）和固定支持器初始溫度（ 60 ）的方法，確保了樣品受熱過程的一致性；採用「 t ? ? t （時間） 」 dta曲線分析生料熱，減少了升溫速率的微弱變化對測定結果的可能影響；得出生料配比和細度對差熱儀測定結果影響小、生料水分和煤品種影響大的結論，並提出對大水分生料測定前要進行預熱處理、對不同品種煤的測定結果要進行修正的建議。最終，得到了差熱儀適宜的工況條件和工作曲線（及方程） 。
  6. This no preciseness not only influence the calculative precision but also badly induces the character difference equation not meeting the conditions of steady flow

    原來的不嚴謹性不僅影響計算精度，更重要的是將導致特徵差分方程不滿足恆定流條件。
  7. Nonlinear dynamical systems ; nonlinear waves ; diffusion ; stability ; characteristics ; nonlinear steepening, breaking and shock formation ; conservation laws ; first - order partial differential equations ; finite differences ; numerical stability ; etc

    非線性動力系統；非線性波；擴散過程；穩定性；特徵值及特徵曲線；非線性陡斜，阻斷和激波的形成；守恆定律；一階偏微分方程；有限差分；數值穩定性等等。
  8. Lake - experiment for an un - baffled practical circular array verified the effectiveness and error tolerance of this new method. 5. the intrinsic mechanism of optimal array gains is studied for the scenario when the element spacing is less than one half - wavelength, with emphasis on un - baffled circular arrays

    針對一個24元均勻分佈圓陣的湖上實驗結果表明，這種新的恆定束寬波束形成方法是有效的，且在一般條件下，對基陣陣元幅度和相位響應誤差具有良好的寬容性。
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